The England international is off contract in June and can speak to foreign teams from Janaury 1 about pre-contract terms.
Lingard has made just one start this season – against West Ham in the Carabao Cup – and has spent more time on the pitch for his country than he has for his club.
He can open talks with foreign clubs from January 1 and it's understood that Barcelona and Milan have both expressed a strong interest in signing him as a free agent.
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