According to Sportsmail, Real Madrid are keeping tabs on Everton goalkeeper Maarten Stekelenburg with Keylor Navas linked with an exit. The Colombian is currently second choice behind Thibaut Courtois at the Santiago Bernabeu, and is attracting interest from the likes of Paris Saint-Germain. While boss Zinedine Zidane will prefer to hold on to Navas, he is aware he could force an exit in his search for first-team football, and the Madrid manager has identified Stekelenburg as a summer transfer target. The Dutchman is currently third choice at Goodison Park behind Jordan Pickford and Jonas Lossl, and has less than a year left on his current contract.