expressed his disappointment with Mavs head coach Jason Kidd and GM Nico Harrison ... The two even won the Olympic gold together. "I played with you on the 2000 Olympic team, we got gold together ...

Jason Kidd was seen walking the sideline mouthing, "I don't have a timeout to challenge it," but even if he did, per the NBA rulebook, that's not something a coach's challenge can be used on as ...

But Mavs head coach Jason Kidd should definitely be in the running ... teased that he could represent Cameroon in the next Olympics. Of course, Bam Adebayo will still be in his prime.