#3 Aaron Wan-Bissaka

Aaron Wan-Bissaka is a player who has seen his standards drop severely over the last year.
The Englishman signed from Crystal Palace in 2019 for a reported fee of £45 million. Having established himself as one of the best right-backs in England, Wan-Bissaka now finds himself fighting for a starting spot at Manchester United.
Wan-Bissaka is undoubtedly an excellent player on his day. He is extremely adept at defensive work, especially in one-on-one situations. Wan-Bissaka's defensive acumen is also one the best in the league.
His passing and distribution have let him down in the recent past. Wan-Bissaka has found it difficult to contribute in attack, especially in Ralf Rangnick's system. He has found himself battling teammate Diogo Dalot for a starting spot.
#2 Harry Maguire

Harry Maguire has had an underwhelming season so far with Manchester United.
The Englishman signed from Leicester in 2019 for a reported fee of £80 million, making him the world's most expensive defender. Maguire has failed to perform at his best this season even though he is known for his excellent aerial ability and great distribution.
At 6 feet and 4 inches, Maguire offers a dominating presence aerially, especially in defensive situations.
The Englishman recently had an excellent run with England at UEFA Euro 2020, helping the Three Lions to reach the final of the tournament. Many expected Maguire to carry his form back into the Premier League, something which has not happened this year.
#1 Jadon Sancho

Jadon Sancho has been one of the most disappointing players in the Premier League this season.
Manchester United were interested in the player for the past two years, finally signing him last year for a reported €85 million. Considered one of the best wingers in Europe, Sancho has failed to have any impact at Manchester United since joining.
An extremely influential player at Dortmund, Sancho played a key part in the club's successes during his time at Signal Iduna Park. However, since joining United, Sancho's form has been on a negative spiral. He has not made the most of his spot on the wing and has looked like a shadow of his former self.
Sancho has managed just three goals in 24 appearances for the Red Devils. His output has simply been poor and his price tag only makes matters worse. Sancho will have to pull up his socks if United are to finish their season strongly.