Fans hold up signs before the Champions League quarterfinal second leg soccer match between Manchester City and Liverpool at Etihad stadium in Manchester, England, Tuesday, April 10, 2018 AP

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Manchester City's Gabriel Jesus scores their first goal REUTERS

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Liverpool's Mohamed Salah in action with Manchester City's Aymeric Laporte REUTERS

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Manchester City's Ederson clashes with Liverpool's Sadio Mane REUTERS

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Manchester City's Raheem Sterling in action with Liverpool's Trent Alexander-Arnold REUTERS

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Manchester City's Leroy Sane in action with Liverpool's Trent Alexander-Arnold REUTERS

Manchester City's Leroy Sane, 19, hits a goal that was disallowed during the Champions League quarterfinal second leg soccer match between Manchester City and Liverpool at Etihad stadium in Manchester, England, Tuesday, April 10, 2018 AP

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Liverpool's Roberto Firmino in action with Manchester City's Bernardo Silva REUTERS

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Manchester City's Kevin De Bruyne in action with Liverpool's Mohamed Salah REUTERS

Liverpool's Mohamed Salah scores his side's first goal during the Champions League quarterfinal second leg soccer match between Manchester City and Liverpool at Etihad stadium in Manchester, England, Tuesday, April 10, 2018 AP

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Liverpool's Mohamed Salah celebrates scoring their first goal with Virgil van Dijk REUTERS

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Manchester City's Gabriel Jesus reacts as Liverpool's Mohamed Salah celebrates scoring their first goal with team mates and a smoke grenade is on the pitch REUTERS

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Liverpool manager Juergen Klopp celebrates their first goal scored by Mohamed Salah REUTERS

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Manchester City manager Pep Guardiola after being sent to the stands REUTERS

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Liverpool's Mohamed Salah celebrates scoring their first goal REUTERS

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Liverpool's Mohamed Salah celebrates scoring their first goal with teammates REUTERS

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Manchester City's Sergio Aguero comes on as a substitute to replace David Silva REUTERS

Liverpool's Roberto Firmino, second right, celebrates with his teammates after scoring his side's second goal during the Champions League quarterfinal second leg soccer match between Manchester City and Liverpool at Etihad stadium in Manchester, England, Tuesday, April 10, 2018 AP

Soccer Football - Champions League Quarter Final Second Leg - Manchester City vs Liverpool - Etihad Stadium, Manchester, Britain - April 10, 2018 Liverpool's Mohamed Salah celebrates scoring their first goal with team mates as smoke grenade is on the pitch REUTERS