He said: "I feel for him because of the situation he finds himself in both for club and country.
"But he answered all this by scoring for us. For what it's worth, in my opinion he should be in the England squad. That's my honest opinion.
"He is a precious commodity. We are not trying to rein him in. But he has got to go slowly, slowly.
"He is one of the best players in the world and I am going carefully, carefully with him."