Kemba Walker's knee, according to Mavericks GM, is "not good."

The Dallas Mavericks recently signed veteran and former All-Star guard Kemba Walker to a one-year, non-guaranteed contract in the hopes that he can at least partially supplement the playmaking of a team that, when Luka Doncic is out, plays like the worst offense in the league and is seriously lacking Jalen Brunson. 

Walker, 32, must first be in good enough health to participate. Three operations have been needed on the left knee: two on the meniscus and one arthroscopic treatment in 2017. After a promising start with the Knicks, he continued to deteriorate and wasn't the same player toward the end of his Celtics tenure. In a cost-cutting move, he was then removed from the rotation and sent to Detroit. Since February, he has not appeared in an NBA game.