Seems to me that if he is going to tarnish someone's reputation -- and calling a very popular, star player a clubhouse cancer is definitely tarnishing his reputation -- he needs to source it a little better. It's also the first I'm seeing Pete being described that way. If anything, we've heard the opposite over the last five years. So I suspect most readers, like the ones here, will question the commenter rather than Pete. If it is true, then get someone on record saying so, preferably a current or former teammate.