Who are the remaining options for the Celtics’ final open roster spot?

Thomas RobinsonThe options are dwindling. The Celtics have one more roster spot available, and we have to assume Danny Ainge has been quietly exploring the market for his final puzzle piece. But we’re only six days away from media day and the free agency talent pool is becoming quickly desolate.

The Celtics were reportedly in on Andrew Bogut, but the 32-year-old veteran signed a one-year veteran minimum deal with the Lakers yesterday. Assuming that Boston offered Bogut a contract, this will be the second time in seven months that he has spurned the Celtics in favor of a team with more big man depth. Meanwhile, Tyler Zeller signed in Brooklyn and basketball savant Boris Diaw is headed home to…