Argentinian international Perotti has now admitted he could make the switch, should a tempting offer come his way in January.
He told Spanish media: "I've not been playing well recently and I need to find my best form, but something could happen.
"A transfer is definitely possible in the winter market."
It is believed Perotti would be available for around £8m, with Sevilla prepared to cash in on the injury-plagued winger.
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