Celtics' 15th-man options: Anthony Bennett, Ty Lawson, Marcus Thornton, other Marcus Thornton?

Ever since the Celtics bought out David Lee, Boston has had it's 15th and final roster spot available. We've heard on many occasions that the club is in no rush to fill the position, including once again last night:

However, Brad Stevens has also mentioned what type of player he'd like to have if the team did add an extra body:

#Celtics HC Brad Stevens says if the Cs fill 15th roster spot, adding a shooter with positional versatility would be preferred. #celticstalk — A. Sherrod Blakely (@SherrodbCSN) February 25, 2016If Danny Ainge does decide to bring somebody in, here are a few possible options:

Anthony Bennett

Bennett was the No. 1 pick in the draft less than three years ago (2013), yet…