Manchester United manager Sir Alex Ferguson believes Wayne Rooney will soon shake off the frustration of his World Cup performance.
But Ferguson recognises that Rooney, who was far from his best in England colours, will be disappointed he has missed a big opportunity to impress on the big stage.
"I don't expect a hangover. I think there'll still be a bit of disappointment in the lad," Ferguson told sportsnet.ca.
"I think all the players coming back from the World Cup who didn't do well, who didn't reach their expectations may I say, will feel that they've missed something.
"That's because the World Cup's only once every four years. That's the horrible part of that tournament.
"We have several players who have come back very, very disappointed. We've Patrice Evra for instance, Wayne Rooney of course, and Nemanja Vidic."
There is a notable exception though, according to Ferguson, and a particularly pleasing one.
"I think one player who will come back quite positive because he had a good World Cup was young Javier Hernandez from Mexico. I think he did very well and he surprised a lot of people," the Scot said.
"So whereas we've got some disappointments from players like Wayne, Nemanja and Patrice, I think we're going to have a positive effect from Javier."