Tom Aspinall, the UFC heavyweight champion, proposed introducing a rule for a retaliatory foul
"I still hold the opinion that if someone breaks the rules, if it happens once, it can be considered an accident, if twice or more — the other person has the right to a retaliatory foul. I like this idea. A free retaliatory foul.
We are fighting, you kicked me below the belt once, the referee gives five minutes. We start again, and you do it again, then the referee says, 'Stand up and get ready — the opponent gets a free foul.' I am absolutely serious, why not?" — the British publication Bloody Elbow quotes.