Morrison struck both goals for loan club QPR in Saturday's 2-0 win over Brum.
"He has got so much ability and if the lad realises that himself he could be in the England squad and going to the World Cup," he said. "That's how good I think he is.
"Ravel showed against us just how much trouble he can cause opposition teams at the World Cup, even with the quality he will be up against.
"At the start of the season with West Ham he was one of their key players, and for some reason or another he's lost his way a bit. Ravel has so much ability.
"He's a young lad, he needs to realise what he's got in front of him. Ravel has got one of the best chances of a lot of players to go to the World Cup. I think he just has to realise that."
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