Barcelona's Argentinian forward Lionel Messi argues with Liverpool's English midfielder James Milner (R) during the UEFA Champions League semi-final first leg football match between Barcelona and Liverpool at the Camp Nou Stadium in Barcelona on May 1, 2019. (Photo by Josep LAGO / AFP) (Photo credit should read JOSEP LAGO/AFP/Getty Images)
Liverpool's James Milner challenges Barcelona's Lionel Messi after the ball had gone out of play during the UEFA Champions League semi final first leg match at the Nou Camp, Barcelona. (Photo by Nick Potts/PA Images via Getty Images)
Liverpool's English midfielder James Milner checks on Barcelona's Argentinian forward Lionel Messi (bottom) as he lies on the pitch after a foul during the UEFA Champions League semi-final first leg football match between Barcelona and Liverpool at the Camp Nou Stadium in Barcelona on May 1, 2019. (Photo by LLUIS GENE / AFP) (Photo credit should read LLUIS GENE/AFP/Getty Images)
BARCELONA, SPAIN - MAY 01: James Milner of FC Liverpool and Lionel Messi of FC Barcelona gesture during the UEFA Champions League Semifinal match between FC Barcelona and FC Liverpool at Camp Nou on May 01, 2019 in Barcelona, Spain. (Photo by TF-Images/Getty Images)
Liverpool's James Milner challenges Barcelona's Lionel Messi after the ball had gone out of play during the UEFA Champions League semi final first leg match at the Nou Camp, Barcelona. (Photo by Nick Potts/PA Images via Getty Images)
