He told BILD: "As things stand now, I am supposed to (go back), but I've had so many enquiries.
"What matters now is that I get fully fit again.
"When I am fit, then we want to reach for the top. We are within touching distance of Champions League qualification and that is our goal. We've got the quality for it."
He added: "People love me in Spain. I've already been likened to Messi, and when I am really fit again then these comparisons will resurface.
"I just need two or three more weeks. Everything is really perfect here, probably better than in England, even though I did enjoy my time at Chelsea."
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