must offload a chunk of squad in an aggressive summer overhaul after missing out on European football entirely. However, while represents an attractive financial opportunity, should be one of the last players in the shop window.
Mainoo and Garnacho have enjoyed similar rises, posing as shining lights in one of United's most miserable eras. It's hard to comprehend how both starlets combined played just 33 minutes in Wednesday's Europa League final defeat against Tottenham Hotspur. Almost one year to the day, the academy graduates scored a goal each to guide United to a historic FA Cup final victory over Manchester City.
Yet, Amorim waited until the 71st minute to introduce Garnacho after initially raising eyebrows by starting him on the bench.
Mainoo was frustrated until the start of seven minutes of stoppage time. Once he arrived, Spurs were already using all sorts of black magic to play as little football as possible.
While there are plenty of similarities between Garnacho and Mainoo, there has consistently been one crucial difference that separates United's 20-year-old duo.
After full-time, Garnacho decided to spark speculation surrounding his future by conducting an irked interview in the mixed zone.
He said: "Obviously, it's hard for everyone. Our season was s***. We didn't beat anyone in the league. We lacked a lot of things. When you don't score goals, you always need more.

"Until we reached the final, I played every round. And I played 20 minutes today - I don't know. I'm going to try to enjoy the summer and see what happens next."
Garnacho's brother also annoyed supporters by aiming fire at Amorim in his latest outspoken social media activity.
The Portuguese head coach mentioned the United No. 17's wastefulness in front of goal in the semi-finals while defending his decision to start Mason Mount instead.
"Working as no one else, helping every round, coming from two goals last two finals, just to be on the pitch for 19 mins and get thrown under the bus. Wowe (sic), hahahaha," Roberto Garnacho wrote on social media.
On the other hand, Mainoo was among the United players who were visibly devastated after the final whistle blew and the reality of a catastrophic campaign seeped in.
The Stockport-born midfielder has had it tough after a sensational breakthrough season. A run of starts has been a rarity since Amorim replaced Erik ten Hag last November.
He likely would have felt justified in publicly spouting his disappointment over his limited role in Bilbao. But he didn't.
Mainoo acted like a United player should, like any player should when the heat on his team-mates and head coach is at its highest.
Like Garnacho, the England international's Old Trafford future is uncertain. Questions over where he fits in Amorim's 3-4-3 system are rife. Contract negotiations continue to stall.
But if United want to save any pride they have left, they should ensure those discussions don't transition into a collapse. Mainoo possesses the character that Amorim's dressing room is worryingly devoid of.
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