Liverpool have put in an offer for Schalke defender Joel Matip, Sky reports. Matip, a German-born Cameroon international is out of contract at the end of the season but Schalke want him to sign a new deal. It reported  that the player, who has scored three goals in the Bundesliga this season, has told his club he wants to leave. The 6ft 4in centre-back would be a strong addition to Jurgen Klopp’s defence, which has conceded 32 goals in 23 Premier League matches this season, the most of any club in the top 11. Liverpool may face a battle to secure his services with the Press Association reporting three weeks ago that at least two French clubs were also in the running for the 24-year-old.