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Manchester United's English striker Wayne Rooney takes part in a team training session at their Carrington base in Manchester, north west England, on April 12, 2017, on the eve of their UEFA Europa League quarter-final football match against Anderlecht. / AFP PHOTO / Paul ELLIS (Photo credit should read PAUL ELLIS/AFP/Getty Images)

Manchester United's English striker Wayne Rooney takes part in a team training session at their Carrington base in Manchester, north west England, on April 12, 2017, on the eve of their UEFA Europa League quarter-final football match against Anderlecht.  / AFP PHOTO / Paul ELLIS        (Photo credit should read PAUL ELLIS/AFP/Getty Images)

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Manchester United's English striker Wayne Rooney (C) takes part in a team training session at their Carrington base in Manchester, north west England, on April 12, 2017, on the eve of their UEFA Europa League quarter-final football match against Anderlecht. / AFP PHOTO / Paul ELLIS (Photo credit should read PAUL ELLIS/AFP/Getty Images)

Manchester United's English striker Wayne Rooney (C) takes part in a team training session at their Carrington base in Manchester, north west England, on April 12, 2017, on the eve of their UEFA Europa League quarter-final football match against Anderlecht.  / AFP PHOTO / Paul ELLIS        (Photo credit should read PAUL ELLIS/AFP/Getty Images)

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(LtoR) Manchester United's English striker Wayne Rooney, Manchester United's English midfielder Ashley Young, Manchester United's English midfielder Michael Carrick, Manchester United's Dutch defender Timothy Fosu-Mensah and Manchester United's Italian defender Matteo Darmian take part in a team training session at their Carrington base in Manchester, north west England, on April 12, 2017, on the eve of their UEFA Europa League quarter-final football match against Anderlecht. / AFP PHOTO / Paul ELLIS (Photo credit should read PAUL ELLIS/AFP/Getty Images)

(LtoR) Manchester United's English striker Wayne Rooney, Manchester United's English midfielder Ashley Young, Manchester United's English midfielder Michael Carrick, Manchester United's Dutch defender Timothy Fosu-Mensah and Manchester United's Italian defender Matteo Darmian take part in a team training session at their Carrington base in Manchester, north west England, on April 12, 2017, on the eve of their UEFA Europa League quarter-final football match against Anderlecht.  / AFP PHOTO / Paul ELLIS        (Photo credit should read PAUL ELLIS/AFP/Getty Images)

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MANCHESTER, ENGLAND - APRIL 12: Wayne Rooney, Luke Shaw, Michael Carrick, Marcus Rashford and Zlatan Ibrahimovic of Manchester United in action during a first team training session at Aon Training Complex on April 12, 2017 in Manchester, United Kingdom. (Photo by Matthew Peters/Manchester United via Getty Images)

MANCHESTER, ENGLAND - APRIL 12:  Wayne Rooney, Luke Shaw, Michael Carrick, Marcus Rashford and Zlatan Ibrahimovic of Manchester United in action during a first team training session at Aon Training Complex on April 12, 2017 in Manchester, United Kingdom.  (Photo by Matthew Peters/Manchester United via Getty Images)