He'll be the most creative attacking player for ManYoo, straight away. How that translates to collective play under Ole will likely be a work in progress.
No question he is talented but this will be his 4th team in 5 years - he has never established consistency anywhere, even being benched at times by Favre (Non injury related, btw)
They averaged 1.74 goals per match on 14 shots (Vast majority from the center and inside the 18 yard box). Bruno the highest assist man at 7 while City had 5 players with as many. Sancho should make a difference in that regard. A lot of the creation of space started on Marcus' left side so there will be much needed balance now + as I understand it Jadon & Rashford are longtime mates which should facilitate on pitch chemistry, in theory
Probably line up like this:
Rashford - Martial - Sancho
Pogba-Bruno-McTominay
Shaw-Maguire-Bailly-Wan-Bissaka
De Gea
United should score more & provide more attacking danger - we'll see how chemistry & leadership on the pitch develops because this will be something to watch how it evolves too