The Ecuador international full-back has followed the lead of Marouane Fellaini by committing his future to the Red Devils until the summer of 2018 Manchester United have triggered the one-year extension clause in Antonio Valencia’s contract, which will tie him to the club until June 2018. Last week, the club announced that Marouane Fellaini had extended his stay at Old Trafford by a further 12 months, and on Tuesday Valencia followed suit.