The Magpies manager was fuming after Arsenal's reported £10million offer for France midfielder Cabaye was made public on the eve of United's 4-0 Premier League defeat at Manchester City on Monday night.
Newcastle rejected the approach out of hand and Pardew would prefer to make at least one addition before the September 2 cut-off.
Pardew told the Newcastle Chronicle: "If it doesn't (happen), like anything in life, we're going to have to get on with it with what we've got.
"We've still got a very good team with Loic Remy on top of it. We lost Demba (Ba) and got the other guys in in January. I still think one more would be the perfect scenario."
He added that new blood could be the perfect boost after the opening-day mauling by City.
"I think a player does that to the group. A big player coming in boosts the group as well as the fans," he added.
"I'm not going to say something that I don't think is true and say 'oh, it's not affecting them'. I think they'd like to see another striker come in the door.
"That's something that hopefully will be done before the window shuts."