Yeah it would be a problem.
There are no 100% factual reports claiming he has HIV but then again if you were a footballer you wouldn't want the world to know either because you would most likely be blacklisted. Especially if you aren't a world class player.
To be honest I don't know if he has HIV or not I was hoping someone here would know. I know he had hepatitis early in his career but he apparently overcame that. But yeah, I've been hearing rumors that he had HIV for some time now but there is no real proof. So I guess he's negative until proven positive to be fair.
That would explain why no clubs want him though. Unless his knees are really that fucked.