The Premier League side have now reportedly sent scouts to watch Sporting star Geovany Quenda ahead of a potential move in a matter of months.
Jadon Sancho has left United fans fuming after suggesting that Rashford is now enjoying "freedom" following his move to Aston Villa.
Sancho, who's still under contract at Old Trafford but is currently on loan at Chelsea, commented on Rashford's Instagram post following his debut for Villa.
Amorim stuck to his word by not raiding Sporting Lisbon for their top stars in January - as promised - but he is now plotting moves to land some of his former players in the summer.
I couldn't see myself staying in England because the Premier League is very demanding and I didn't want to play for any club other than United.
