Hayward and Kyrie coming off their injuries, you're looking at a minutes split something like this (this is very rough):
Irving (32)/Rozier (16)
Brown (16)/Smart (24)/Rozier (8 )
Hayward (24)/Brown (16)/Tatum (8 )
Tatum (24)/Hayward (8 )/Horford (16)
Horford (14)/Baynes (20)/Theis (14)
So are we trading Marcus Morris, or is he just not getting any minutes at all once Hayward comes back? Or did you forget about him?
balancing minutes next year is going to be more difficult for Brad.
I think Morris gets traded. I see it coming down to needing to pick between letting Smart go, letting Baynes go, paying the luxury tax (which may also mean we can't re-sign Baynes if he wants the full MLE), and trading Morris. Since I think Morris adds less to the team when everyone is healthy, and in the event of an injury there are more people at his position.
If you go with the lineup I suggested, an injury to any Smart or Irving is easy to make up for (increase Smart and Rozier's minutes, play Brown at the 2 more, play Theis more, etc.). If you keep Morris and trade Rozier, you're stuck either playing the non-injured PG 48 mpg or having a Larkin/first round rookie/Rozier replacement playing significant minutes at PG. As for an injury to a wing, with no Morris on the roster you just play Jayson and Jaylen more at the 3, then give Theis, Smart, and Rozier more minutes.
I like the toughness Morris brings to the team this year, but with the jumps Jaylen and Jayson have made this season I just don't see his place on the team