Amorim has urged the likes of Jadon Sancho, Antony, Alejandro Garnacho and Tyrell Malacia to find themselves new clubs this summer and has sidelined them from senior training.
But buyers are scarce on the ground and there is a possibility those mentioned could still be United players when the market shuts in just over a week.
Sancho is in talks with Roma, while Antony and Garnacho are wanted by Real Betis and Chelsea respectively.
However, for the moment, no agreements have been struck.
And Amorim said on Friday: "It’s clear these players want to play in different clubs - so we have to try to make arrangements so we are both happy and they are happy.
"But when the window is closed we have to receive the players (any who do not leave) and so then anything can happen."