Currently, Valentim is a free agent, and Amorim has asked the club's top officials to explore the possibility of signing him.

Amorim and Valentim previously worked together at SC Braga, where Amorim recently left his position.

United's coaching staff needs some additions following the departure of Andreas Georgson last month. Georgson had stayed on after Amorim took over from Erik ten Hag, but he has now joined Tottenham's team under the new manager, Thomas Frank.