Greece international midfielder Sotiris Ninis has signed a two-and-a-half year contract with Panathinaikos, the Greek Super League club announced on Thursday.
No financial terms of the deal were announced by the Athens team.
Ninis, 24, began his career with Panathinaikos in 2006 and left in 2012 to join Italian club Parma.
He saw limited action with Parma and was loaned to PAOK last season where again he played in only 12 matches.
For the national team Ninis has made 30 appearances since 2010 scoring three goals.