The three-point shot and ball-telling-the-truth enthusiast has agreed to a two-year deal, which he can't sign officially until Wednesday.
Wallace averaged 12 points a game for the Detroit Pistons in a season that saw the franchise fall short of the Eastern Conference finals for the first time in seven years.
The North Carolina product was instrumental in the 2004 NBA championship, coming over mid-season in a deal that paired him with then-dominated Ben Wallace in the front court.
Because I'm begrudgingly tapped into the Pistons fan base, I can say that Wallace was a polarizing figure. It seemed everyone had a strong opinion about him. Some saw him as an energetic, versatile team leader while others thought his on-court theatrics were a detriment to the team.
Regardless of the differing opinions, his ability to defend in the post and hit the outside jumper should give the Celtics an added dimension to play off an already strong core of battle-tested veterans.