When I think of 'greatest" player it implies more to me than just what you did on the pitch. Sure that goes a long way, but it also includes your overall impact on the club. Who is that one player that when you think of Manchester United you also think of them? George was and probably always will be my favorite player, he even has a dog in the race for best player too, but George almost achieved "anti-hero" status. He smoked too much, he drank too much, and was a serial womanizer. He was a legend "on the pitch", but Bobby is more than that. He is 79 years old and made his debut for the club over 60 years ago and yet still he is talked about as that one player that people most associate with the club. I said it earlier. There's only one answer to who is the greatest player that's ever played for Manchester United. It's Sir Bob - it just is.