Pep Guardiola has revealed that Benjamin Mendy missed Manchester City’s Premier League victory against Fulham because of a knee problem and he does not know how long the French defender will be out. The left-back missed much of last season with a knee ligament injury sustained against Crystal Palace last September. He returned to action in April, in time to make France’s squad for their World Cup-winning campaign in Russia, where he played once, in the final group match against Denmark in Moscow.