Nate Duncan (@NateDuncanNBA), Daniel Leroux of RealGM (@DannyLeroux) preview the upcoming offseason for the Oklahoma City Thunder, Toronto Raptors, Boston Celtics, Utah Jazz and Houston Rockets.

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Jimmy Butler has reportedly postponed meetings with rival teams after receiving a max qualifying offer from the Chicago Bulls.

Butler had planned on meeting with the Los Angeles Lakers, Boston Celtics, Philadelphia 76ers and Dallas Mavericks.

Butler can sign a five-year deal worth more than $90 million.

Butler is attempting to determine how many years to sign a new deal with the Bulls for as reports earlier surfaced that he preferred a short-term deal.

Al-Farouq Aminu is scheduled to meet with several teams as he hits the open market.

Aminu is scheduled to visit the New York Knicks, Boston Celtics, Portland Trail Blazers, Toronto Raptors and New Orleans Pelicans.

The Dallas Mavericks are also in the mix to re-sign Aminu.

Greg Monroe said five teams have shown strong interest as he enters free agency.

Monroe said he will meet this week with the Boston Celtics, New York Knicks, Milwaukee Bucks, Los Angeles Lakers and Portland Trail Blazers.

“(He and agent David Falk) are definitely looking at all our options,” he said. “You can see the trend is everybody’s taking shorter deals right now. So, most likely, I might take that route, too, and when the new deal kicks in, get a longer-term contract.

“I’m looking at a two-year deal plus an option” to become a free agent.

Monroe admits he is out of the Detroit Pistons' plans.

“Stan had smaller teams in Orlando (Magic) years ago,” Monroe said. “Dre is like Dwight Howard. So Stan wants to put good players around him. The team has different plans, and I respect that. I don’t want to be anywhere I’m not wanted.”

As Orlando restricted free agent Tobias Harris will pursue a maximum-level offer sheet on July 1 that the Magic possibly won’t match, the Detroit Pistons and Boston Celtics have emerged as leading candidates for the talented forward, league sources told RealGM.

Harris, 22, is among the top young players on the available market, and could be the most vulnerable restricted free agent to leave his team. Around the NBA, several teams are believed to be open to preparing a near-max contract for Harris — which could approach $15 million-plus per season, an area the Magic likely elect not to match given the course of extension talks last October and their current team salary structure.

For the Pistons, there is a vision of using Harris as a potential hybrid stretch-wing, capable of playing the small and power forward positions. Several NBA personnel told RealGM that Harris’ slashing and outside shooting will jibe instantly with Stan Van Gundy’s system.

In Orlando, Harris has maintained dialogue with Scott Skiles, his former coach, throughout the year, exchanging encouraging messages. Nevertheless, Orlando's desire to match a maximum-level offer sheet on Harris has been in question.

The two sides couldn’t reach an extension last offseason, Orlando sticking to offers below the $10-to-$11 million that Harris desired — and now promises to surpass. The Magic selected Mario Hezonja, 6-foot-8, with the No. 5 pick in Thursday’s NBA draft. Harris dealt with an ankle injury over a stretch of the season, giving the Magic reason to use him in a lesser role.

The Los Angeles Lakers and New York Knicks have also been long known as interested teams for Harris.

Out of Tennessee in 2011, Harris went to the Milwaukee Bucks with the 19th overall pick in the NBA Draft. He spent two years with the Bucks before being dealt to Orlando in 2013. Over four NBA seasons, Harris has established himself as a tremendous citizen in the community, with a strong work ethic on the court shown in year-to-year leaps. He was drafted with star potential and has sought to reach the level through offseason training.

At 6-foot-8, Harris averaged 17.1 points, 6.3 rebounds and 34.8 minutes in 68 games last season. He has made shooting improvements each season, a sign of growth every summer, and shot 36.4 percent from three-point range in 2014-15. Harris has career averages of 12.7 points and 5.5 rebounds.

Danny Ainge said the Boston Celtics were "probably offering too much" to trade into the lottery despite having all of their attempts turned down.

The Celtics were reportedly targeting Justise Winslow as high as No. 4 and tried to grab him again when he was available at No. 9. Winslow was selected at No. 10 by the Miami Heat.

"Our probably biggest plan was to try to use a lot of our assets, a lot of our picks, to try to consolidate picks and to move up in the draft," he told 98.5 The Sports Hub's Toucher & Rich. "We spent a few weeks trying to prepare for that and do that, knowing that nothing really gets done until draft day, when people are making their final offers, their best offers and so forth. We were very close to consolidating picks and moving up in the draft on a couple of different occasions, and it just didn't happen.

"In hindsight, the next day, it's probably a good thing. We were probably going to spend too much to do what we needed to do," Ainge said. "This morning I wake up, and I'm refreshed that we got guys that we like but also that we didn't overspend for some of the players that were in the draft -- actually just basically one player we were chasing that we thought we had a realistic chance at."

Ainge hinted his offer might have included at least one of Brooklyn's unprotected future first round picks, but the Charlotte Hornets were set on drafting Frank Kaminsky.

"(The future picks) are worth a lot, (but) I think the draft is probably the time where they're least valuable, simply because people get so caught up in players," Ainge said on the radio. "Without mentioning names, there are some players that were drafted at certain spots (by teams) that turned down lots of draft picks that I just don't think was smart on their part.

"But I think our assets have value. On draft day, typically those are hard deals to move. People get so caught up and get so in love with a specific player that that player in their minds becomes bigger than life."

The Boston Celtics are prepared to send a significant trade package to the Philadelphia 76ers at No. 3 if Jahlil Okafor slips.

Okafor is in play for both the Minnesota Timberwolves at No. 1 and particularly the Los Angeles Lakers at No. 2. The Lakers are also considering D'Angelo Russell and Kristaps Porzingis with the second overall pick.

The Celtics have a considerable numbers of assets to make trading up viable and various reports have indicated they are including Marcus Smart in proposals. 

Sam Dekker has been moving up-and-down mock drafts in the days and weeks leading up to the NBA Draft, but the 21-year-old may have predicted his landing spot nearly 15 years ago.

Dekker has always dreamed of playing in the NBA, but recalled a grade school project in which he stated that the Boston Celtics would draft him this year. Oddly enough, the Celtics have the 16th pick, as well as the 28th selection, in this week’s draft. Dekker has been projected as a mid-round pick. 

"There are two things I remember. In second grade I made a journal and said I was going to be an NBA player," Dekker revealed on Wednesday in New York. "And in first or third grade I had to make a timeline [of my life] and I wrote, I think 2015, that I got drafted by the Boston Celtics. I had just gone to Boston in 2001, so I was seven. I went with my family and loved the city. So that’s what I put on my timeline. Here we are in 2015 and who knows, maybe it could happen.”

Several experts including Chris Mannix/SI, Gary Parrish/CBS Sports, Scott Howard-Cooper/NBA.com and Jonathan Givony/Draft Express, have had the Celtics taking Dekker at No. 16 in recent mock drafts.

The Boston Celtics plan on pursuing Paul Pierce if they can also acquire Kevin Love this offseason.

Pierce was traded by the Celtics to the Brooklyn Nets in 2013 and he spent last season with the Washington Wizards. The Los Angeles Clippers are currently considered the frontrunners to sign Pierce.

Gary Washburn of the Boston Globe reports a return of Pierce to the Celtics could be a prelude to a front office position with the team and that he eventually wants to become a general manager.

The Boston Celtics have offered Marcus Smart and picks No. 16 and 28 in the first round to the Philadelphia 76ers for Nerlens Noel and the No. 3 pick.

The 76ers were not interested in the trade offer.

The Celtics have also been interested in trading for DeMarcus Cousins.