DB.com says that Al Jefferson is readily available and that Dallas has been contacted about him:
↵↵↵Has Minny dangled Jefferson at the Mavs already this offseason? We hear it is so. Might Al Jefferson be a Mavs solution in Summer Shopping going forward, a solution at center, a sound backup plan for the use of The DUST Chip, a final piece to the puzzle?
↵
↵
They also do a good job of outlining the downsides to Jefferson here. He's not a great defender, and he's not full center size, so Dallas would be facing the same issues defensively that they would with a Chris Bosh or Amare Stoudemire or Drew Gooden type. But he is a low post beast, and the combination of that sort of player and Dirk Nowitzki's midrange game is certainly intriguing.