While club captain Bruno Fernandes has filled in as one of the two pivot players in recent weeks, a lack of options up front may prompt Amorim to play him in the front three.
That would leave veteran duo Christian Eriksen and Casemiro as the only two senior midfielders in the squad who can play in the engine room.
Amorim was forced to name 21-year-old goalkeeper Hubert Graczyk on the Man Utd bench for the first time in the FA Cup triumph over Leicester with both Altay Bayindir and Tom Heaton out injured.
MANCHESTER UNITED fans are dreading the prospect of seeing two senior stars starting against Tottenham.
The trio have been a major part of the Red Devils squad in recent weeks, with Ugarte and Collyer in particular providing much-needed energy in midfield.
