Germany defender Antonio Rüdiger will leave Chelsea at the end of the season after turning down the offer of a new contract, manager Thomas Tuchel confirmed Sunday. “The situation is that he wants to leave the club,” Tuchel told Sky Sports after the 1-0 Premier League win over West Ham. “He informed me of this in a private talk. “It is disappointing. We will miss him a lot.” The 29-year-old Rüdiger was reportedly offered record terms for a defender from Chelsea. Tuchel said competing for his signature was made harder by UK government sanctions imposed on the club owned by Russian Roman Abramov…