Irvine waits for news on defender
SEBASTIEN Pocognoli will be assessed by Albion's medical staff ahead of Tuesday's Barclays Premier League fixture with West Ham United.
The Belgium international suffered an injury after an accidental collision with team-mate Chris Brunt.
Alan Irvine believes the left-back has a dead leg, which could take a while to fully heal.
The Albion head coach said: "Seb has a dead leg, we think.
"He and Chris Brunt slid in at the same time and it seems he came off worse.
"All we can do now is assess him and see how he is.
"Dead legs can be a problem because you never know how quickly they will settle down.
"But we will keep our fingers crossed that he will recover in time for the West Ham game."
James Morrison missed Saturday's game with Arsenal due to illness.
Irvine added: "James came in train on Friday but clearly wasn't right.
"He did a light session and looked physically awful.
"Unfortunately it's been one thing after another since he went on international duty.
"He's had two illnesses, tooth ache and a sore knee. We will see how he is early this week."