Sevilla player Joris Gnagon was sent off in a 2-1 “friendly” victory over Liverpool for an atrocious foul on teenage defender Yasser Larouci.
Gnagon thumped the 18-year-old left-back shortly after coming on as a substitute and was dismissed.
"Was it too much? I thought so, yes," James Milner told Liverpool TV.
"We know it's only a friendly, but you don't see many red cards in friendlies, do you? You don't normally see too many tackles like that."
Gnagnon later apologised for the foul.
Nolito sent Sevilla ahead but Divock Origi levelled for Liverpool.
Even with Julen Lopetegui’s Sevilla down to 10 men they still found a winner when Alejandro Pozo struck.
"It looks like Larouci was lucky but we have to wait. He hit him full throttle. Harry (Wilson) got a knock on his cheekbone and his eye so that was not too cool," Liverpool coach Jurgen Klopp added, with Ever Banega responsible for that.
"In general, I don't like overly hard games. The challenge is there to win the ball, that's the only reason. There are rules. I don't want to say anything specific about this game because there will be headlines. I want to have a holiday in Spain again."