However, prior to Tarkowski's goal, Everton's Jarrad Branthwaite and Carlos Alcaraz clashed heads and referee Michael Oliver stopped the game at 93:43 for two minutes to allow the players to get their medical treatment.
The 2-2 draw on Wednesday saw four red cards shown after the final whistle following a mass brawl between both teams started by Curtis Jones and Abdoulaye Doucoure, who were both dismissed by the referee.
However, after a heated atmosphere at Everton's famous ground, the Reds' right back Conor Bradley chose to remain silent on the match's refereeing, saying he would 'get myself in trouble' if he spoke with Oliver.
Bradley was booked during the extra-time of the first half, just a minute before another Everton player, Abdoulaye Doucoure, was given his first yellow card.
The referee was previously accused of losing control of the game after he had shown four red cards following the final whistle.