Pardew is remaining cautious and is refusing to panic buy.
He said: "The job for us is to make sure we're strong enough in the second half of the season. We've obviously lost Demba Ba and we need to find a replacement. There's no doubt about that and we're working very hard towards it.
"It's important that the club goes forward in the right manner and we don't make a knee-jerk decision and bring in a player that is not suitable and right for this football team.
"But we still have to be conscious of where we are in the division and we're in a precarious position that we hope to strengthen on Saturday with a positive result.
"I think we definitely need a player or two in this window to make sure of our Premier League status because we're under a little bit of pressure.
"Hatem Ben Arfa is still missing, I've lost Demba and Cheick (Tiote) is away on African Nations duty so our full complement of players within our club is not good enough because we're still missing players."