I don't know about that bonesy. It was a degenerative knee problem, and it was there in 2008, but it got worse in 2009 to the point where he couldn't continue playing. Once he stopped playing, it stopped bothering him, and even while playing VFL, it wasn't the high tempo game that AFL is. IF he gets games, which i doubt he will unless there is injuries, i would still worry about those knees. Also, given Melbourne have the likes of Gawn, Spencer, Fitspatrick and Martin to backup Jamar, why would they bring Campbell off the rookie list? Better to get more experience into younger blokes