The Spaniard is not concerned about how often the young star gives away possession despite England boss Roy Hodgson getting on his case during the Scotland game in the week.
But the Everton chief is still not ready to give Barkley what he wants.
He said: "I think eventually I want Ross to play that position, but 'eventually' is maybe 100 games in the Premier League. That's the thought.
"Ross can play many positions, I just think at the moment you need to let him develop that knowledge about the game, allow him to make good decisions.
"Playing in the deeper role is different. You need to reduce what you do on the ball, put more work off the ball.
"I think the outstanding quality of Ross is the way he brings that transition as soon as he wins the ball, the way he attacks players and drives at space.
"You don't want to take that away from his play too much.
"I think eventually he will get a little bit more settled with the way he plays.
"But at the moment, it would be a big loss if you restrict Ross in terms of what he gives you naturally as a raw talent."
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