Why Fred is on the bench for Man United vs Villarreal in Europa League final

Man Utd face Villarreal in the Europa League final in Gdansk and Harry Maguire and Fred are only on the bench.

Why Fred is on the bench for Man United vs Villarreal in Europa League final
Man Utd face Villarreal in the Europa League final in Gdansk and Harry Maguire and Fred are only on the bench.