The Spaniard will leave Bayern Munich to join City at the end of the season and Stoke City winger Afellay, who played under him at Barcelona, expects the success to endure once he makes the switch to England.
"I think it's his image, his name. He's one of the best coaches in the world," Afellay told Sky Sports News HQ.
"He is busy with football 24 hours, seven days a week.
"He loves the game so much, and there are so many things that he does. He is an incredible coach."
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