When I really think of this personnel really matter if u consider Liverpool and Manchester city attacking structure you'll see five players each attacking five separate zones from right wing(Mahrez,Arnold)right half space (Debruyne,Salah)centre(Firmino,Aguero)left half space (Silva, Mane) and left wing (Robertson, sterling) all potent and a blend of playmaking and goalscoring capability,compare that to United were Awb who is our right wing attacker wouldn't produce half any of this players output
The blend of Martial, Rashford and Greenwood isn't balance with all of them being more goal threats lacking genuine creative skill they all want to play just around the box,they don't stretch opponent enough,non of them is good at dropping 40m away from goal to aid ball progression or a threat while hugging the touchline
I hope Amad Diallo can bring this qualities,from what I've seen (YouTube) he looks the kind of right who can provide width on the right wing and bring those qualities,if he can be matured enough to be trusted is unknown
Going forward I'll like to see and attacking five of
Left back(Telles)inside forward(Rashford)centre forward (Martial or Cavani) and right winger( Amad diallo or someone else) with Awb sitting deeper alongside the two cm covering the centre halfs,it think it would give us better balance going forward