Chelsea manager Rafa Benitez says he will consider the Belgium striker's situation in light of his impressive form so far this season at the Hawthorns.
Clarke will be without Peter Odemwingie as he sets off to join Nigeria at the Africa Cup of Nations in January and is aware of the potential need to bolster his forward options in the upcoming transfer window.
"It's a situation I cannot control, but I can't spend my time worrying about it," Clarke told reporters.
"It won't be a problem. We know the possibilities that could happen in January and we know what we will do if that happens.
"I'm not telling you my plans. But I have to manage a football club with the help of my staff and scouts. We have six scouts having a planning meeting about potential targets and you have to think ahead.
"January's a window and there's one in the summer, so you plan towards those windows and for a number of circumstances that may happen."