If GM Danny Ainge can make the numbers work, he'll have himself another young guard who can bolster his team's odds of winning now and help to smooth the transition into that dreaded time when Paul Pierce and Kevin Garnett call it quits.
Lee has the passing and ball-handling ability to man either backcourt position, but is best suited to playing off the ball, where he can stretch defenses with his outside shot and slash to the basket when the opportunity presents itself.
All of which will be welcome qualities in Boston, however head coach Doc Rivers would choose to use Lee. Chances are, Lee would be slated for a spot off the bench, with Terry filling in as the starting shooting guard if Avery Bradley isn't ready to start the season.
In any case, Lee would fit in nicely alongside Terry in the Celts' second unit. Both are combo guards by nature, meaning that they could trade off between shooter and distributor with relative ease. Terry is a 38 percent three-point shooter for his career, while Lee has topped 40 percent from deep in three of his four NBA seasons.
That sort of sniping will come in handy, especially for a bench squad that figures to feature a potent post presence in rookie Jared Sullinger. The Celtics' first-round pick out of Ohio State will need all the space his teammates can create for him given his lack of experience at the NBA level and his perceived disadvantages in terms of size and athleticism.
A few three-balls by Lee here and there would certainly be of some assistance in that regard.
Lee, though, can't quite replace the threat that Allen represented as one of the league's most feared marksmen. Lee's shot is respectable, but not to the point that opposing defenses would need to account for it at all times.
That being said, the C's wouldn't need or expect Lee to be Jesus Shuttlesworth 2.0. He's a different player with a different skill set, albeit one that still includes a smooth shooting stroke.
More importantly, the 26-year-old Lee is nearly a decade younger than the player he'd be brought on to help replace. Doc wouldn't necessarily have to concern himself with carefully lording over Lee's minutes, as he did with Allen.
If Lee winds up in Boston, he'd only add to what's already shaping up to be one of the better benches in the NBA.