Pardew's one summer signing was the loan deal for QPR forward Loic Remy.
He said: "Since Demba [Ba] left, we have lacked a player to increase our goal threat.
"With all due respect to the players we have, we needed someone to really put the other team on the back foot, and I think Remy does that.
"We have got Papiss [Cisse], Shola [Ameobi] and [Yoan] Gouffran to complement that, and hopefully they all stay fit.
"That is probably the one fault you would say against us in this window. That other offensive player, which unfortunately we didn't secure, would have just protected us a little bit."
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