Deulofeu spent last season on Merseyside with Everton.
"I think he is a very interesting player," the 20-year-old told El Mundo Deportivo. "For me, he is one of the best strikers in the world and would be a great signing."
Deulofeu added: "I have worked hard this year at Everton and I have learned many things and I've been lucky enough to achieve the goal of returning home.
"Yes, they are the best players, but I am very confident about my chances and will work every day."
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