Stars such as Tim Krul, Cheick Tiote, Yohan Cabaye and Hatem Ben Arfa have all been linked with moves away from St James' Park.
However, with the Magpies in a healthy financial position, Pardew has warned that it will take a breathtaking offer to persuade owner Mike Ashley to cash in.
"I feel we are in a strong position financially to hold on to our players," said the Newcastle manager. "If one of our top players goes, it will be a bid that blows the doors off. That's it."
Newcastle are yet to strengthen the squad which finished a disappointing 12th in the Premier League last season, while Steve Harper, Danny Simpson and James Perch have all left the club.
Pardew is keen to recruit a proven striker with Aston Villa's Darren Bent, with whom he worked briefly at Charlton, among his targets.
He said: "We are strong in some areas and weak in others. I think it would be nice to strengthen in some areas.
"The obvious target is a striker and we have four or five targets.
"It is difficult, because I know there is speculation, particularly about Darren Bent."