Sunderland signs Greece midfielder Mavrias

Sunderland says it has completed the signing of Greece

midfielder Charis Mavrias from Panathanaikos on a three-year

contract for an undisclosed fee.

The 19-year-old Mavrias, who has played twice for Greece, made

70 appearances for the Greek club after coming through its youth

academy, scoring six times. He made his debut at 16 in the

Champions League in 2010.

Sunderland lost its first Premier League game of the season at

home against Fulham and travels to Southampton for its next match

on Saturday.