Sunderland have completed the signing of 19 year old Greek international Charis Mavrias from for an undisclosed fee from Panathinaikos.
The player has agreed a three-year deal with the Black Cats.
Mavrias, who will wear the number 35 shirt, is Sunderland's 11th signing of the summer.
Football Is Life
Share The Love
Stay in touch with Tribal news, updates and special offers direct to your inbox