"I was unhappy with what Thompson did to Riise. When it's a challenge or a tackle it's okay," revealed the Reds boss.
"But when a player tries to hit another when the referee isn't looking and the ball has gone then I get very angry and I think Graeme would too.
"Thompson doesn't need to do that. He is a good player and if he had kept his cool he could have caused more problems for us.
"He tried to 'do' Riise in front of me and even the fourth official saw it. We had words. I think he was inviting me out for dinner but I don't think I will be available. I am not going to tell you what Thompson said but it was nothing really abusive.
"I was appalled by the reaction of the crowd to Riise and if the referees don't protect that type of player then we have a problem."
Was Thompson out of order?