On the back of Kim Do-Heon's serious knee injury at
While no diagnosis has retuned yet for the Korean Republic star midfielder the Baggies boss is keeping his fingers crossed it's only his medial knee ligament which has been damaged and not the more serious anterior cruciate.
"Kim was in yesterday (Sunday) and his knee hadn't blown up," Mowbray said.
"There's damage there and he's going for a scan this morning (Monday) and we'll hopefully get the results this afternoon or this evening.
"We've got to be hopeful it is not as serious as it potentially could be.
"The worst-case scenario is that it is an anterior cruciate ligament injury.
"Hopefully it's just a medial knee ligament problem, which would keep him out for six to eight weeks.
"But let's wait and see."
Although bringing in a number of new faces during the summer Albion still have a relatively small squad with Mowbray adamant any further injuries will weaken the 12th place Baggies in coming weeks - starting this Saturday against Fulham (KO 3pm).
"You get to the point where your injuries force your hand on your starting XI, as opposed to having a dilemma in the week and having to call a player into your office and say 'listen, I'm going to leave you this weekend because...'," he added.
"It's getting to the stage in my mind where the starting XI will probably pick itself pretty soon, which isn't ideal but okay as you go along.
"But if you lose another one or two players then you have a team that you're not particularly comfortable with and you'll have weaknesses that can be exploited.
"A huge part of modern day football is about the ability to change the course of games and the way they're flowing from the bench.
"No team likes injuries and we're no different but we haven't got the biggest pool to pick from.
"I'm not sitting here saying I've got a crisis on my hands because that's not the case.
"I'm sure at the weekend we'll still be able to put a decent side out."