This isn't an Angel OR Will situation. oscar has talked a lot about Angel being a key at point guard and said that Angel didn't play as much on Sunday because he had an injured foot the previous week and didn't practice much.
Angel, Will, Rod are the 3 players that oscar mentions consistently as the 3 key players in the backcourt with Tay, Omari, and Shane as the key bench guys.
If anything its Tay (or Omari/Shane) OR Will and it seems clear that Tay has had 2 years to pass up Will and he didn't do it with Frank and hasn't done it with oscar either. Both oscar and Lowery praised Will for being a key defender in the Upstate game as well.
Will is going to start and play 80% minutes his final 2 years here.