Clarke has not been without controversy this season as he was charged by the Scottish FA for criticising a refereeing decision last week.
He has again criticised the amount of games that are being decided by controversial refereeing decisions, feeling that his team have been on the wrong end of those in the majority of their games so far.
"I spoke about two soft penalties. One was given to Hibs and one wasn't given to us," the former West Brom boss said.
"That decided the game. We deserved to get something from that game but those two decisions cost us at least a point. That's disappointing.
"I think one of the most disappointing things for me is of the five league games we've played, three of them have been decided by referees. That's not correct.
"That's 60 per cent. It's too many. One in our favour and two against us, but that's not correct."