Tottenham defender Jan Vertonghen faces a lengthy spell on the sidelines after it was confirmed he sustained knee ligament damage in his side’s comeback victory at Crystal Palace on Saturday. Vertonghen, an ever-present for Mauricio Pochettino’s side this season, fell awkwardly following a challenge by Connor Wickham and was later substituted. The defender left Selhurst Park on crutches and, after undergoing a scan, has now been ruled out for the foreseeable future. “Further assessment & scans have confirmed thatJan_Vertonghen sustained damage to his medial collateral ligament in his knee at Palace,” Tottenham tweeted. “Our medical staff will continue to monitor his progress during his rehabilitation to determine when he will be ready to return to training.” Wickham, who appeared to catch Vertonghen in the face with his elbow, was charged with violent conduct by the Football Association for the incident which was missed by referee Martin Atkinson. Vertonghen’s injury will come as a blow to Tottenham who are chasing their first league title since 1961.