The youngster was a substitute in the 6-0 defeat to Liverpool on Sunday.
Rafael Benítez has pointed the finger at the Real Madrid president Florentino Pérez after his sacking and called for continuity if the club are to ever catch Barcelona.
The winger has been a big part of their success in the Premier League and FA Cup this season.
The American youth international will be hoping to make his debut in Florence.
Plenty of United talents will be hoping to make their first appearances in Denmark.
The Spurs boss is adamant that his side will cope without injured goalkeeper Hugo Lloris.
How should Manchester United replace Wayne Rooney?
Wojciech Szczesny could not prevent Roma falling to Real Madrid.
The Reds have been handed a small boost as Danny Ings returns to outdoor training.
Danny Mills is predicting Tottenham will win the Premier League, and has no confidence in Arsenal to do so.