Let’s say a defender makes a last ditch tackle, gets the ball, but the opposing forward makes a meal of it. The ref sees a desperate tackle and a striker going down and decides that the defender has hacked the forward (but, of course, he hasn’t). Now, under the system we currently have, there’s time for the ref to view the video and recind the yellow card – no crime, no punishment (with apologies to Dostoevsky). Under a sin bin system, the defender’s team play with ten men for ten minutes when they’ve committed no offence.

Mind you, there are miscarriages of justice as it is – and many more of them – so I’d still say it’s a good idea to introduce a sin bin – but you did ask if anyone could see a downside!