Listened to a podcast with Gary Lewin (the ex Arsenal physio) on medicals, and it was very interesting. Says you can't really pass or fail, it's a risk assessment. Some managers will wave them through (Warnock) and others are more cautious. He mentions Overmars (not by name) but said his knee had 3/4 years left in it. After 3 seasons, Wenger sold him to Barca for 20m and he played a year at Barca before his knee went.