Utter horse poo being talked by Robins here. The replays clearly showed that there was no contact with Mcgree and he twisted his knee as he planted it on the grass before trying to kick the ball.
"Gus got whacked and we didn't even get a free-kick for it. It's a difficult job to be a referee, but it was a clear foul. The important thing is the recovery. It was a hot day today, so it took a lot of energy. I don't know how he is right now. It was a really nasty whack on the knee, but hopefully he will be okay"