Pardew, who is also targeting bringing players in before the transfer deadline, feels that the former Lille's man could well be on his way in the window.
"Now if Cabaye goes, and that's 50-50 in my opinion, we need to replace him," Pardew is quoted as saying in The Telegraph.
"That would be very unsettling for me and our fans. The bottom line with a world-class player is that it would have to be world-class money for us to let him go.
"I think it's fairly evident, even before the Cabaye situation, we need to bring at least one or two players in and that hasn't changed. We need to bring two players in."