Former Port Adelaide premiership player, Kane Cornes has questioned Charlie Curnow's professionalism.

The high-flying 22-year-old dislocated his kneecap playing a non-competitive game of basketball with Blues teammates and will undergo an operation.

โ€œI canโ€™t believe Charlie Curnow has been playing basketball in his off-season with the history of knee issues he has had,โ€ he toldย Telstra AFL Trade Radio.

Curnow played 11 games in 2019 missing games with persistent knee injuries interrupting him.

โ€œIt feels to me like every third week, heโ€™s carrying a knee complaint, he always plays with strapping, youโ€™d think if youโ€™ve got any concerns with your knees, you would not be playing basketball in the off-season.

โ€œNow heโ€™s dislocated his kneecap. I know for a fact Warren Tredrea had massive issues with that injury over the course of his career to the point where he just could not get back.

โ€œHe just wasnโ€™t the player he was when he was a four-time All-Australian because his kneecap kept slipping out.

โ€œSo hopefully for Charlie thatโ€™s not the case, heโ€™s younger as well, but certainly his pre-season is going to be ruined.โ€

Former Richmond and Western Bulldogs coach, Terry Wallace had a more lenient view on the issue.

โ€œI cut him a little bit more slack than that, theyโ€™ve still got to be able to live their lives to a degree, but what I do agree with is if he does have knee issues, that just takes it out of the equation,โ€ Wallace said.