When Manchester United re-signed Cristiano Ronaldo in the summer of 2021, it was impossible to predict the exact moment he would march down the touchline like a petulant child and disappear down the tunnel while his team-mates were still fighting to secure a victory on the pitch.
But it was always obvious it would end in tears and tantrums.
It was impossible to predict that a 37-year-old superstar whose best days were long gone before United signed him again, but who is still earning an obscene amount in wages because of the player he once was, would refuse to come on as a substitute against Tottenham Hotspur in front of close to 74,000 fans.