Moses joined Chelsea from Wigan Athletic in 2012 and helped the team win the Premier League title in 2017, when he was deployed mainly as a wing-back under then-boss Antonio Conte.
The former Nigeria international also won the UEFA Europa League with Chelsea in 2013 and the FA Cup last year.
The 28-year-old has found his opportunities limited under new boss Maurizio Sarri this season and has not played for Chelsea since the end of October.
