West Bromwich Albion defender Jonny Evans picked up an injury against Swansea City last night.
Evans had to leave the field in the 53rd minute of the Baggies’ match against Swansea City yesterday.
The former Manchester United man is no set to undergo scans today to assess the severity of his problem, and Pulis admits that if he is out for a lengthy period of time it will be a major blow.
"We don't know [if it is a long-term injury], he'll have a scan tomorrow but it does leave us a bit short in that one position. We have to bite the bullet and get on with it," he said.
"Jonny could go through to the end of the season and be fit, it's just part of the ifs, buts and maybes of the game."
Pulis’ comments come just after the transfer window, meaning that he may now be regretting not bringing in a centre back over January.
The Baggies did very little business in the last month, with Alex Pritchard's and Sandro’s loan arrivals from Tottenham Hotspur and Queens Park Rangers, respectively, their only two signings.
Evans was replaced by Craig Gardner in the Baggies 1-1 draw with Swansea, which continued to suggest that Pulis does not have much faith in James Chester.
Chester was brought to the Hawthorns from Hull City last summer, but he has barely featured so far, and it remains to be seen whether he will get an extended run of games if Evans is sidelined.