I’ve come across similar in the past. A mate is a really good player, and one of the local teams would pinch him while off the ball. The idea was that the ref would not see the initial action but would hopefully hear a noise and then turn round to see him retaliate so he got sent off.
One Monday morning after he’d played this team he showed me his arm and it was really bruised where he’d been pinched so much. He wasn’t the sort to retaliate but he was a seriously good player so the other team were trying to get rid of him.
The next time they played I got the game, so knew to watch out for tricks off the ball. The keeper played the ball out to his right back with his left foot, then booted Mick with his right. Unfortunately for him I’d watched the ball but then tracked back in time to see him do it, so he was sent off instead of his target.
He appealed, saying that he’d followed through and caught the forward as he kicked the ball to his player! Obviously he didn’t get away with that one.
If the forward is a good goal scorer then it could be similar to this. If you have the teams again, keep an eye on this because it can really cause problems. If you do see it then yes, it should be a red card.