It's hard to answer this question without imagining what roster moves are made.
Imagine that Ainge still moves up to draft Olynyk, then parlays Utah's love for the guy into a sign-and-trade: Brandon Bass, Jason Terry, the rights to Kelly Olynyk, and a top 12-protected 2015 pick for Paul Millsap. Elton Brand signs for the mini-MLE with the idea that Doc would play him as a smallball center sometimes when Garnett rests. Beno Udrih signs for the league minimum.
The roster is then:
Garnett, Millsap, Sullinger, Brand, Melo
Pierce, Green
Rondo, Bradley, Lee, Udrih, Crawford
Fill out the roster with guys like DeShawn Sims, Phil Pressey, and Tim Ohlbrecht.