Man Utd boss Amorim says now is the time to change formation
Amorim departed from a back three with wing-backs for the first time in Friday's 1-0 win over Newcastle and instead fielded a conventional back four with two holding midfielders.
The Portuguese boss memorably once said not even the Pope could force him to change his system.
But Amorim, with United now just three points adrift of a Champions League place, insisted he was never as obstinate as he appeared.
"When I came here last season, I understood maybe I don't have the players to play well in that system...