"We can't guarantee that any player is going to stay in this day and age and we were absolutely delighted that Steven recommitted himself to the club in the summer," said Parry.
"But we are certainly not complacent about the future. What Steven craves is success on the pitch, it's not about boardroom politics.
"If we win silverware we will keep our best players. They can keep knocking on the door but it will not be opening, that is for sure,"