The Sixers, Timberwolves and Celtics have inquired about the availability of Jamal Crawford, according to a league source.

Crawford has an opt out option at the end of year one.

The Clippers and Suns have also reached out to the Blazers about a potential deal involving Crawford.

Jared Sullinger's draft stock fell amid reports of doctors red flagging him as having a back issue.

Sullinger had already fallen out of the top-seven before the injury concerns came to light.

But sources say the Suns and Sixers are still considering drafting Sullinger in the middle of the first round.

Danny Ferry has been offered a six-year contract to become the next general manager of the Hawks, according to sources.

Ferry had also been in talks with the Sixers, but was unable to come to terms on a contract.

Ferry has worked in the San Antonio front office since leaving the Cavaliers in 2010.

Rod Thorn said the Sixers will choose the best available player before they look to fill a need.

"It's clear to me that if someone has more talent and has a bigger upside than someone else who might fill that need, you take the guy with the bigger upside," said Thorn. "It's very difficult to pass that up.

“Essentially, you draft for talent and you trade for need.”

Thorn sees a flat draft beyond the top-5 prospects.

"Let's take out the first five," Thorn said. "After that it's kind of like beauty being in the eye of the beholder. Someone may be drafted from 15 to 20 that could turn out to be as good as someone drafted from 6 to 14. We don't see a lot of difference."

The Sixers own the 15th, 45th and 54th overall picks and appear to be leaning towards taking a big man with their highest selection.

John Henson, Tyler Zeller, Perry Jones, Arnett Moultrie and Andrew Nicholson will participate in a group workout for Philadelphia on Saturday.

The Sixers brought in Marquis Teague for a solo workout on Friday.

Philadelphia has been quiet about their likelihood of selecting a point guard, instead focusing more heavily on big men.

Lou Williams is drawing “significant” interest around the NBA, with one source pegging Williams’ worth "in the Thaddeus Young range."

Young signed a five-year, $43 million deal last December.

"It's impossible to gauge [how much a team would be willing to pay] because there are so many teams who have money and Lou certainly is a good player," Sixers president Rod Thorn said. "The natural inclination is for teams who have money to spend some of it, of course. The last couple of years, there are a lot of teams that have gotten way under the salary cap and I'm sure that Lou will get some interest from teams."

Williams plans to opt out of the final $5.176 million of his deal.

Lou Williams has decided to opt out of the 2012-13 season on his contract.

Williams was due to make $6.39 million next season.

Williams led the Sixers in scoring last season with 14.9 points per game.

The Sixers had Moe Harkless and Hollis Thompson in for a workout on Friday.

Harkless is a small forward with good athleticism and scoring ability.

"I think this would be a good fit for me because it's close to home and I feel that I have skills that they are looking for," said Harkless.

The Sixers are looking to add an interior presence to provide defensive support or a perimeter player who can generate offense.

“Bigs that can protect the rim and guys who can put the ball in the basket,” Sixers director of player personnel Courtney Witte said. “We know what our weaknesses are. We’d like to improve our shooting and we’d also like to get a big that can help us down the road also.”

Philadelphia’s first pick will be 15th. They also have the 45th and 54th picks.

“Every day you have to be more educated with the players,” Witte said. “We have background things going on—talking to the coaches. That’s the kind of process. The tape work, it’s still ongoing, but we’ve watched a lot of film on these players so now it’s more background talking with their agents, their coaches and the people involved in their lives and going over that kind of information.”