The Baggies are fifth in the Premier League table but have lost their last two matches and the manager pointed out the potential need for replacements in the New Year when Peter Odemwingie of Nigeria and DR Congo's Youssouf Mulumbu depart on international duty.
"There's a possibility we lose a couple of players to the African Nations Cup, we could lose players to injury, but when we get closer to the end of the month we'll start to make decisions," Clarke told reporters.
"I haven't really discussed with the chairman [Jeremy Peace] about the way forward in January. That's why we have a technical director [Dan Ashworth]. He's the buffer.
|HOLDING THEIR GROUND?|
|9/2||West Brom are 9/2 with Bet365 to finish in the Premier League's top six|
The former Chelsea assistant manager made six changes ahead of Saturday's 1-0 home defeat against Stoke City, leaving out James Morrison and Odemwingie, but insists that his faith in his players continues despite their downturn in form.
"I can't keep saying I've got a good squad then pick the same players every week. Then I become a liar," he continued.
"I can't tell the players I trust them all the same and then not do that."