The 22-year-old Argentine only joined the club in the summer of 2007 and spent the entire of last season on loan at Greek side Olympiakos.
"I think that the possibilities to play at Panathinaikos next season right now are more than 90 per cent.
"I have been waiting for something from Olympiakos all these weeks but they didn't make a move to buy me so far.
"It's not a matter of money. I wanted to stay at Olympiakos but since they don't want to sign me I have to think about my future."