Tottenham Hotspur could make a move for young Wolfsburg defender Robin Knoche this summer, [football] direct news understands. The 21-year-old centre-back has become a key player for Wolfsburg this season, making 28 starts in the Bundesliga and contributing two goals and one assist alongside his solid defensive displays. Several top sides around Europe are now starting to take notice of Knoche’s performances, with Tottenham supposedly leading the chase for his signature, according to a German football insider. The north London giants are on the lookout for new signings for their back four this summer, with speculation that the likes of Jan Vertonghen and Younes Kaboul could be on their way out of White Hart Lane after an unconvincing season. Much of what happens to Tottenham’s squad may still depend on who they appoint as their new manager next season, with current head coach Tim Sherwood widely expected to make way for a more experienced name. Spurs’ Technical Director Franco Baldini is believed to be keen on Knoche and on continuing his policy of bringing in talented young players from around Europe, though that approach did not yield great results last summer.