Jol insists he will keep tabs on his situation.
He told the Fulham Chronicle: "Bolat is back in Belgium, so we'll have to wait and see what happens.
"He was injured - a cruciate ligament - so wasn't back to his best level.
"The only problem with him is that Liege have a very good goalkeeper and I don't think he will play a lot of games, so we can't keep an eye on him. If he plays it will be easier for us."