Ruben Amorim sets challenge for Man Utd star Kobbie Mainoo amid uncertain future

Kobbie Mainoo is locked in a contract dispute with Man Utd (Picture: Getty)Ruben Amorim has challenged Kobbie Mainoo to show he is worth £200,000-a-week amid his uncertain future at Manchester United.Mainoo, who currently earns £20,000-a-week, reportedly wants a 1,000 per cent pay rise to put pen to paper on a new deal at Old Trafford.Chelsea are thought to be ready to pounce should United decide to cash in on Mainoo during the January transfer window or again in the summer.Whi