I think this type of move only makes sense for certain players. The vast majority of players (even stars) can enhance their stock playing good competition. I think several FSU players made themselves some money last night.
This may be a part of it as well. Last season he had a great year, talk of the nation. This year he had a good season but not great. Take away some of the other threats and let the defense focus on him more and he loses some effectiveness. UNC isn't a great defense but good enough that he may not have wanted to go out on a less than spectacular game.
I wonder if McCaffrey is going to end up following the footsteps of Reggie Bush. Bush was a great player in college, an all-purpose game changer. In the pros he has had a decent career but never became a star, not quite big enough to be every down running back, decent receiver but not as effective against the superior athletes in pro defenses. He may want to protect his "star " status knowing that with his slight build he may not get the giant second contract.
If I were an NFL GM is would hold this against him. Not as a giant issue but maybe moving the balance against him in a close decision. I want guys who are about the team.
Butt will be hurt in the draft because of the injury but I don't think as much as a lot of people are making it out to be. The tweet from Harbaugh said it was an ACL
or an MCL. He was walking after the injury. He had a knee injury last February and was back playing in time for fall camp.
In the NFL injuries are a part of the game, everyone is going to get injured at some point. Do you want a guy who is going to not play because he wants to "protect himself" or do you want a guy who puts team first and will do everything he can to be there when the ball is kicked off.
I never criticize a guy who leaves the game to protect his health but if you are on a team be there for the team, and the whole season if you can.
Maybe this injury will cause Butt to fall to where the Broncos can grab him, don't think he would have been available to them otherwise.