don't get too distracted by game ratings, especially at SF. i am no expert, but it is my experience that game ratings are in part a reflection of team performance; your frustration may be his having to play with (and cover for) weaker players; additionally, SF ratings love good shooters, and this guy is not much of a shooter.
i go with the advice to use this player at PF; his outside skills make your offensive choices much broader. if you are going to be in DIV for a while, train the SF you want -- start with a balanced 19 or 20 year old to save time and money.