Pep Guardiola says there need to be a culture change in refereeing.
The Manchester City boss has criticised the lack of protection for his players during yesterday's 2-nil FA Cup fourth-round win at Cardiff.
Leroy Sane could be out for months after suffering an ankle injury in a foul from Joe Bennett, who was sent off later in the game.
Guardiola says officals need to take stronger action.
Chelsea are also through to this evening's last 16 draw.
Michy Batshuayi scored twice as they recorded a comfortable 3-0 win over Newcastle at Stamford Bridge.