Chelsea manager Graham Potter has admitted that Raheem Sterling's time with the London club has been 'challenging' following his summer arrival from Manchester City.
Sterling signed for Chelsea from the Blues in July in a deal worth £47.5m - agreeing a five-year contract at Stamford Bridge with the option of a further 12 months. The attacker became the first signing of the Todd Boehly era following the takeover.
City signed Sterling from Liverpool in a £49m deal in 2015. He went on to register 131 goals and 95 assists in 339 games, winning four Premier League titles. However, he had just one year left on his deal with the Blues and was keen for a new challenge after spending seven seasons with the Manchester club.