Probably the last season of Giannis in a Bucks jersey if they will come up again short this season. 
https://www.jsonline.com/story/sports/nba/bucks/2020/12/15/giannis-antetokounmpo-signs-supermax-milwaukee-bucks/3843891001/
He will signed a supermax deal with the Bucks, I doubt if he will be traded even if the team will fall short this season.
The coaching staff has to be replace I guess, I think that's the first thing they have to do, just like what they did with the Clippers.
Players are not usually the problem, it's the coaching IMO.