Only Loic Remy arrived on-loan from QPR before the deadline fell.
Pardew said: "We were after flair players and when you get into that market as a Premier League club, you have your league and divisions like the Bundesliga chasing them because they are a rare commodity, so it is difficult to get them over the line.
"Loic Remy has been a great signing and given us what we didn't have last year which is a striker who can play, build the game and finish, while he has a nice manner, is comfortable with our group and has the confidence to play for Newcastle, too.
"But Mike has put in about £200million of his own money and I don't think he wants to put any more of his own money in."
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