Roma's players react at the end of the UEFA Champions League semi-final second leg football match between AS Roma and Liverpool at the Olympic Stadium in Rome on May 2, 2018. Pic/AFP

Roma president Jim Pallotta believes it will be an "absolute joke" if the Video Assistant Referee is not introduced into the Champions League. The Serie A side lost their semi-final 7-6 on aggregate to Liverpool but there were a number of incidents Pallotta was unhappy with in the game, including a handball by Trent Alexander-Arnold which was not given. "It is very clear VAR is needed in the Champions League because you just can't let stuff like this happen," he said.