The opening batsman agreed to become Somerset's overseas player for the domestic Twenty20 competition this season but director of cricket Brian Rose is now unsure whether he will appear for the county this season.
Rose told BBC Somerset: "I'm certainly hoping that within the next three to four days I'd get some sort of conclusive statement from the player or the West Indies board.
"I don't know what they are going to do, to be honest. I'm keeping my fingers and legs crossed at the moment, which I'm sure the public are as well."
Gayle has not played international cricket since December 2010.