Bucks use their $16mil in cap space on Grimes - convince him that he can be the scoring guard/wing alongside KPJ while Dame is out. Collins is the perfect big to play next to Giannis as an athletic defender who can stretch out to the 3 point line as well. He is obtained in a sign and trade with GSW and Utah. Kuminga gambles that he can develop into the Khris Middleton type wing next to Giannis, but can chip in as a small ball big as well.
While dame is out, here is the 10 man rotation:
KPJ, GTJ, Green, Rollins (Dame out for most of the season), Grimes, Kuminga, Giannis, Collins, Portis, Sims