As has become the norm in the city of Boston, Danny Ainge used a trade today to improve the Boston Celtics. The acquisition of David Lee from the Golden State Warriors is a big upgrade to the current state of the Celtics frontcourt. It also gave the Celtics an opportunity to finally dump an unproductive Gerald Wallace.

While Lee had a minimal role and and Wallace had no role last year, Lee still has the ability to play. He proved that during his brief apperance in the NBA Finals this past year. Steve Kerr inserted himself to help jolt a struggling Warriors offense in the late stages of Game 3. Lee helped the Warriors cut a 20 point deficit to one, before ultimately losing. However, the Warriors went on to win the next three games and the championship.

Maybe it was a coincidence, but the participation of Lee seemingly turned around the Warriors’ offense. It also seemed to snap Stephen Curry out of his shooting slump. He helped space the floor, gave Curry more room to operate and provided an actual offensive threat out of the pick and roll.

That’s exactly what the Celtics need. While most of the Celtics’ collection of big men can shoot, few possess the low post moves that Lee does. Along with the ability to space the floor with his jump shot, Lee can post up and score with his back to the basket. The combination of Lee and Marcus Smart, or Isaiah Thomas will also produce a potent pick and roll.

The Celtics were also in desperate need of rebounding help after being abused on the glass at times last year. Lee’s career rebounding average of 9.5 per game will be a welcome addition.

Though he doesn’t provide much defense, the Celtics have a defensively strong backcourt that hopefully will be able to mask some of Lee’s deficiencies.

However, with the addition of Lee, the Celtics’ frontcourt currently looks like this: Lee, Tyler Zeller, Kelly Olynyk, Jared Sullinger, Jonas Jerebko, Amir Johnson and Jordan Mickey. It’s hard to imagine all seven of these players staying put.

It’s doubtful that Johnson will be moved. It wouldn’t make much sense for the Celtics to sign him in free agency just to trade him after the fact. Every other player from that list is tradable.

With names like Ty Lawson, Eric Bledsoe and Jamal Crawford floating around, expect Ainge to continue to pursue different trade opportunities. Don’t be surprised if he tries to make another run at DeMarcus Cousins as well.

Lee may not be in Boston for long. His skillset, combined with an expiring contract will make him a desirable asset to teams. Perhaps Lee is the key piece the Celtics have been missing from making a blockbuster deal.

It’s a win-win situation for Boston. Either they keep Lee and he helps on the floor, or they trade him for an even better player.

Derek McVay is a NBA featured writer for www.RantSports.com. Follow him on Twitter @mcvay34, or add him to your network on Google.