 Madrid agreed to transfer Navas to Manchester United in part-exchange for David de Gea on 31 August 2015, but the deal collapsed because the documents were not submitted to FIFA before the Spanish transfer deadline.Madrid thrashed Real Betis in their home opener by a score of 5–0 with a fine performance from Navas making several saves as well as stopping a penalty.He was a regular starter when the team won the 2015–16 UEFA Champions League.