Ruben Amorim insists it would have been unfair on Ruud van Nistelrooy to have kept him on the backroom staff at Manchester United.
Van Nistelrooy took caretaker charge for four games after Erik ten Hag was sacked in October, overseeing three wins and a draw before Amorim arrived in Manchester.
Amorim let Van Nistelrooy go on his first day at United after speaking to the Dutchman, who was keen to stay on and assist the 40-year-old.
Amorim brought assistant manager Carlos Fernandes, first team coaches Adelio Candido and Emanuel Ferro, fitness coach Paulo Barreira, goalkeeping coach Jorge Vital and analyst Eduardo Rosalino with him to United.
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