Chelsea boss Jose Mourinho feels Diego Costa will be better for his runout in victory over QPR.
Mourinho believes Costa was struggling psychologically and has warned Saturday's opponents Liverpool it is only a matter of time before he returns to the form which has seen him score nine goals in eight Premier League starts.
"A muscular injury doesn't just affect your body but also your brain, because after that you are afraid of reactions," the Chelsea boss said. "Normally, the next match for him will be much better."
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