The Premier League side have confirmed the sale of the goalkeeper, with the France international returning to his former club for a second spell
Steve Mandanda has completed his move back to Marseille after spending a single season in the Premier League with Crystal Palace.
The France international had joined Palace on a three-year deal in July 2016 but the goalkeeper started only nine Premier League games after losing his place to Wayne Hennessey, while he also struggled with a knee injury.
Mandanda had been expected to leave Palace as a result and he returns to Marseille in a deal reported to be worth an initial €2million potentially rising up to €6m, signing a three-year deal at the Ligue 1 club.