Josh Jackson has yet to workout for the Boston Celtics, but the possibility of him going to them at No. 1 has gained momentum.

Markelle Fultz has widely been considered the probable first overall pick for several months.

"I've picked Danny's brain for years," one GM said. "Jackson is an Ainge player all the way. Tough, athletic, long, versatile, elite motor. If he's keeping the pick, Jackson just to me, far and away, is the most Celtics-type player for them to draft. From all my conversations with them, I'm convinced they'll take Jackson No. 1."

There have been concerns by some agents about the lack of playing time that could be afforded to any player going to Boston.

"We have great respect for Boston and Danny Ainge," Jackson's agent B.J. Armstrong said. "That's a championship-caliber organization and Josh brings the things that I know Danny values. He can defend his position at an elite level. He can rebound for his position at an elite level and he can pass for his position at an elite level. All the championship-caliber teams are looking for players who can do those three things. And I know they want winners.

"We're in dialogue with Boston. We're very respectful of them. They have the No. 1 pick and can select whoever they choose. We just need to see how things play out over the next week."

"We like him a lot," the Celtics source said about Jackson. "But we like several guys a lot. We've got a week to figure it out."