Yeah, any players bought with low condition when they come to you is v likely to have been injured for a long time when they were sold to you. I tend not to play them for some games if I can help it and sub them off in their first game. Even still one player who I tried to be v careful with still got injured; didnt play him for three days, sub him off first two games and got injured for 5 days in third game when I forgot to sub him off.