It's been a long time since I've dealt with an injury to a player with a promise because I've been away from the game for a couple of years but I think so.
Assuming you are talking about Dunn...fortunately, you gave him extra minutes in the non-conference. He's sitting at 146 minutes, so he wouldn't start getting upset until after your 16th game. Until then, that math is in your favor..
If you're worried about aggravating the injury, sit him out for several more games to let his health get a little higher.