Sunderland flop signs for German second division side Karlsruher SC
The 22-year-old Greek winger has signed a three-year deal with the German second division side after his unsuccessful stint on Wearside was brought to a close.
Mavrias - a £2.5million signing from Greek side Panathinaikos in the summer of 2013 - made just seven first-team appearance for Sunderland.
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Hide AdHe came on as a second half sub for Karlsruher SC at the weekend in their 4-0 defeat to Union Berlin.
Mavrias made 14 appearances for German second division side Fortuna Dusseldorf in the second half of last season after joining them on loan in January.