On 22 August 2013, Mavrias joined English Premier League side Sunderland on a three-year contract, for an undisclosed fee, although he was left out of the squad to play Southampton due to lack of match fitness.
August 2013, Mavrias joined English Premier League side Sunderland on a three-year contract. This was for an undisclosed fee, although he was left out of the squad to play Southampton due to lack of match fitness. This was on 22.