Harry Maguire has improved the defence, Aaron Wan-Bissaka has continued his form from Crystal Palace, while Daniel James has added even more pace to the attack.
On the whole United look a lot better under Ole Gunnar Solskjaer, even if they did only manage a draw to Wolves on Monday.
However, there are a few concerns about the Red Devils' squad, such as the fact they failed to replace Romelu Lukaku.
United were linked with moves for Pierre-Emerick Aubameyang, Paulo Dybala and Mario Mandzukic in the summer transfer window, but none materialised.
The fear is that if Marcus Rashford gets injured at any point this season, Solskjaer would have to turn to 17-year-old Mason Greenwood.
Having strength in depth up front is hugely important for any team with aspirations of challenging for silverware, so United need to come up with a solution.
And it sounds like they have, in the form of free agent Fernando Llorente.
Llorente, 34, was released by Tottenham at the beginning of the summer and still hasn't found a new club.
Enter United, who according to Gazzette dello Sport have contacted the Spaniard offering him a two-year contract.
Desperate times call for desperate measures and even though Llorente has never been a particularly prolific goalscorer, he would at least provide Solskjaer with another option.
Llorente and Jesse Lingard in the same attacking line - watch out, Premier League.News Now - Sport News