I would be absolutely shocked if any NBA team even pays him 50% of his current contract. What's the market for a PF that has torn his ACL twice and doesn't bother to keep himself in shape, openly declares he isn't going to bother playing defense so good luck trying to run him at SF or at C, and has seemingly regressed as a scorer which is essentially his only real NBA skill?
Being the #2 OVR pick can only get you so far, and his Bulls season has been an absolute disaster. He couldn't play a lick of SF since he was out of shape and lost that spot to Justin Holiday, and then he lost the starting PF job to Bobby Portis. Once Markannen came back he got completely dumpstered from the rotation, and the only reason why he got minutes against the Jazz yesterday was because Portis got injured in the Warriors game the night before.
I think he's worth taking a flyer on for the minimum but I think you're severely over-estimating the market for him. Maybe a team with spare capspace throws a 1 year deal at him for $10mil+ after striking out on FAs to give them a nice expiring deal for the trade deadline and have the small chance he returns to form, but for a guy that was happy to go to the Bucks originally because he would be close to home in Chicago, then got the opportunity to play for his home team and come into the season out of shape, play awfully, and lose both the starting SF and starting PF jobs to Justin Holiday and Bobby Portis respectively... there aren't going to be many suitors for him in general, let alone a suitor that's willing to pay him.