Blues boss Mick McCarthy says he can do nothing to affect whether keeper Bartosz Bialkowski signs the contract which he agreed with the club towards the end of the January transfer window.
Town announced that the new terms, which run until the summer of 2020 with an option for a further season, had been agreed at a time when Crystal Palace were showing strong interest but it remains unsigned.
Speaking at the end of last month, Bialkowski said the deal would be formalised but that there were one or two aspects still to be confirmed.
"I haven’t signed the new contract yet because there are still a couple of things to sort out,” he said. "Hopefully, it will be done soon.
"I’ve still got the option for next year anyway but as I’ve said so many times before, I love this place and I love the club. The two parties want to sign the contract and it will be done.”
Asked at lunchtime whether he has any concerns that the 30-year-old, who was called into the Polish national squad for the first time on Friday, is still to put pen to paper, McCarthy said: "No, there’s not a lot I can do to affect that. He knows my feelings, that I want him to stay, he’s fully well aware of it.
"He’s the master of his own destiny. But look, he’s here for another year whatever happens because there’s an option for another season.
"Getting in the international squad will help him and maybe not help the club in negotiations, I don’t know.”