Manchester United's Portuguese manager Jose Mourinho gestures during a training session at their Carrington base in Manchester, north west England, on March 15, 2017, on the eve of their UEFA Europa League Round of 16 second-leg football match against Rostov. / AFP PHOTO / Paul ELLIS (Photo credit should read PAUL ELLIS/AFP/Getty Images)

Manchester United's Portuguese manager Jose Mourinho gestures during a training session at their Carrington base in Manchester, north west England, on March 15, 2017, on the eve of their UEFA Europa League Round of 16 second-leg football match against Rostov.  / AFP PHOTO / Paul ELLIS        (Photo credit should read PAUL ELLIS/AFP/Getty Images)