Celta Vigo's Argentinian defender Facundo Roncaglia (2nd R) and Manchester United's Ivorian defender Eric Bailly (L) are kept apart as they walk back to teh dressing room having been sent off after a clash between players during the UEFA Europa League semi-final, second-leg football match between Manchester United and Celta Vigo at Old Trafford stadium in Manchester, north-west England, on May 11, 2017. / AFP PHOTO / Paul ELLIS        (Photo credit should read PAUL ELLIS/AFP/Getty Images)