Deulofeu returned to Barcelona for treatment but came back to Merseyside last week and he is giving Martinez the signs he is fit and ready to make an impact.
Martinez told the Liverpool Echo: "He'll definitely come back stronger. He's excited about playing. He's been suffering away from Finch Farm watching the games.
"I can guarantee the fans they will see a very different Gerard Deulofeu and someone who is ready to be very important."
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