Pogue Mahone
Closet Gooner.
He is an absolute nothing player these days, at this level. I can't really remember a United player who had a similar fall from grace, at such a relatively early stage.
It's an absolute travesty watching this current version of Wayne Rooney, the footballer, as he bears no resemblance with the Wayne Rooney who showed up as a teenager and was one of the indisputable leaders of our team for about a decade, at a time when we roughed it out with the very best.
A 22 year old Wayne Rooney is just what our team needs right now. The fire, the fight, the strength and the pure will to score goals and win football matches. Instead, we have this guy. It's just sad.
You'd struggle to come up with similar examples at any other club. Not without desperate injury problems anyway (which rules out Torres, Owen etc.)
Maybe Shevchenko?