11. Isaiah Stewart
Cost to acquire him: First-round pick and a young piece
Detroit Pistons young center Isaiah Stewart is another player whom the Dallas Mavericks have shown interest in this season, but unlike the previously mentioned Bruce Brown, there has not been a reported asking price for Stewart.
For a player of his caliber, it seems reasonable that the Pistons aim to receive a first-round pick and a young piece for the future in exchange for Stewart. The Mavs have a couple of young players and one first-round pick that they could trade if they were to pursue Stewart, but it's unclear how much he would help Dallas if they were to make a trade for him.
He would give the Mavs a great backup center, but he is only 6-foot-8, which could limit his potential as a true rim protector at the center position. Stewart is undeniably a solid upgrade over Dwight Powell, Richaun Holmes, and Maxi Kleber.
This season for the Pistons, Stewart is averaging 11.0 points, 6.8 rebounds, 1.7 assists, and 0.8 blocks per game. He would give the Mavs a backup big who can stretch the floor and bring physicality and intensity, but it may be in the Mavs' best interest to look elsewhere for a backup five.