The 22-year old has an agreement in his contract that will allow him to move on he is offered a deal by a bigger club.
It is understood that several Premier League clubs are interested and Elia is keen to pursue a move.
"In the summer they have to sell me, I want to make a good step at the end of the season and that will happen," he told Dutch magazine Sportweek.
"It could be a move to a foreign side, but also to a Dutch club. Ajax? Everything is an option: I am willing to listen.
"The most important thing is that I will become a better player."