He doesn't want to rush back and injure himself again, so the team has to get it done without him.
Giannis Antetokounmpo came back too soon from his adductor injury this season, which likely led to the soleus injury he is dealing with right now. The Milwaukee Bucks forward likely should have sat out a bit longer to fully heal, but that did not happen. Perhaps that was because it was clear that this team needed him to keep its head above water.