The 26-year-old has not played for the club since their Capital One Cup defeat on penalties by Arsenal on September 25 and hasn't even made the bench. The arrivals of Morgan Amalfitano and Stephane Sessegnon, along with the form of Saido Berahino, have led to Dorrans being pushed down the pecking order.
However, his manager insists he is still "an option" and could yet feature in his plans despite the player being linked with a loan move to the Skybet Championship side Nottingham Forest.
"He asked to play in the last under-21 game [against Liverpool], so that tells you he's in a positive frame of mind," said Clarke. "When I get to December, I will start to think about the January transfer window and have conversations about players. Those who are on the sidelines now may be back in the team by then and we will be talking about a different set of players."