Jesse Lingard had the one-year option on his Manchester United contract triggered.
Lingard’s contract now runs until summer 2022.
Earlier this month Sky Sports News reported that Lingard representatives were exploring loan options for the United midfielder in January, with Real Sociedad one of the clubs they had initial talks with.
Lingard has not made it to the Premier League or the Champions League this season despite being part of the squad for both competitions.
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