3 days is enough. At that point another day or two isn't going to matter, and more than a week is overkill. It's not like he woke up the day after he was having headaches and said "I feel good, put me in." He was doing everything in practice that he needed to do for those 3 days.
Well apparently it mattered a lot. Players are notorious liars, they want to play all the time. Its up to the medical staff to make sure that the player is healthy enough to play and with Franzen they dropped the ball.
At what point do we start holding these guys responsible? Weiss kept playing hurt until he finally had to have surgery, Gus keeps getting hurt every other week I could go on and on. There are some on this site that have were calling for Babs and Holland to be fired. While I'm not calling for their heads but when is the training staff going to take some responsibility, not all the injuries have happened because of bad luck.