Inter Milan defender Materazzi welcomes Panathinaikos offer
Matrix has largely spent this season on the bench at Inter and, despite recently extending his contract, could seek a move elsewhere.
"We know that Panathinaikos are interested in Marco, but up until this moment we have not considered the possibility," said agent Claudio Vigorelli.
"The player is in a winter training camp with Inter in Abu Dhabi and I haven't spoken to him yet.
"Greece is an option I certainly would not rule out."