The captain has two years left to run on his current deal but Pardew is keen to tie him down to a new five-year contract, after the Argentine was linked with a move away from the club earlier in the season.
The 29-year-old had originally insisted on waiting until the summer to decide on his long-term future, however the club are confident the former Deportivo defender will agree a new deal.
Pardew told the Sun: “We’ve not been told no. We hope by the time the transfer window ends that situation will have been resolved.”
Newcastle have not won in five games and will be hoping to get their season back on track on Wednesday night against West Brom, something which Pardew believes Hatem Ben Arfa could be key to.
He continued: “He's fine, I think he knows he's not at his best yet. I would expect better from him because of what a good player he is.
"He will find his best form before the end of the season but how quickly that is I don't know.
"I'll use him as I see fit, I didn't use him on Saturday because I didn't think the situation was right. It's as simple as that."