Overrated is always a perceptive thing. Some of it is one's own fault, because of having high expectations based on media/fan talk.
So not expecting to debate on it.
Bale - He has medals to show for it, and the goals in CL finals, but overall with all his injuries and his contributions in the Real team, I think he has too much hype in British media. And add the fans wanting him here every summer, because 'He was definitely going to turn us into league winners. Let us ignore what is happening in Spain" talk.
Martial - He has loads of potential, but I don't think his hype matches his on field exploits. His fanboys have blamed everyone in the team - coaches, tactics, teammates and all, but I still don't see him as someone who will tear it apart in the league.
Luke Shaw -Young player who came with awesome potential. But his hype once again was well over what he was showing on the field. Fans went gaga over his ability to blast forward along the left side. What I saw was him abandoning the LB position to overtly try and contribute to the attack, while our other 3 defenders weren't talented enough to plug the gap. And add to that, Shaw had shi**y crossing talent, which many times made the whole running forward futile and we were left with just gaps at the back. So many years without a competition in the position, yet I feel we still need an upgrade in that position. But every decent game he has, we see fans saying MOTM performance and so convinced we are set for years to come.
Needless to say, every time the likes of Martial/Shaw pull on our shirt, I want them to simply destroy the opposition. And become the best in the business.