Inter Milan coach Walter Mazzarri wants more from Fredy Guarin.
Guarin has returned to the first team after January's transfer failure with Juventus.
Mazzarri said: "Fredy Guarin is not consistent throughout the 90 minutes and he is aware of that too. It's not a physical issue, so I'd like him to improve his concentration to become a top level player. Each player has his own characteristics, some are more fired up than others, but that's human nature."
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