Man Utd, Arsenal, Tottenham target Stekelenburg offered new Ajax deal
But Stekelenburg's agent, Rob Jansen, said that his client is still keeping his ears open for a possible move to another club in Europe.
"We are obviously listening to what Ajax want," Jansen told Algemeen Dagblad.
"They have always been a good employer and we have a good relationship.
"However, Maarten has clearly set his sights on a transfer to a good club in a bigger league."