This was the result of the challenge by Mane. Mane intended to get the ball IMHO but it's difficult to disagree with the red card when you see the imprint it made on the keeper.
Why "he had to go for the ball" is wrong. Player's right to safety is greater than the right to do anything to try and kick the ball. pic.twitter.com/DJhDUfrA2J
— Daniel Storey (@danielstorey85) September 11, 2017