Kobbie Mainoo and Luke Shaw could miss Man United's trip to Madrid in another blow to Michael Carrick - but Atletico boss Diego Simeone says 13th-placed Reds are a 'very strong side'

Manchester United are sweating on the fitness of Kobbie Mainoo and Luke Shaw , with both at risk of missing the trip to face Atletico Madrid . Michael Carrick and his players fly to the Spanish capital on Monday afternoon, but as is customary for United before Champions League games, they trained at their Carrington base in the morning. Club sources insisted that by mid-morning a decision was still to be made as to whether either player would travel to Spain, with £70m summer signing Carlos Baleba ready to step in for his first start should Mainoo not be fit…