He adds some thing different, something we dont have with raw pace and power (outside of Haaland). he has the work ethic that Pep demands (see Peps recent comments on Sav).
Is he as technically gifted with the ball as say Foden or Cherki....no he is not (but not many are)....but he has attributes that they dont have....as said before he has real pace and power...so he adds something we dont have.
He can play either side and is a better goal scorer than ANY of our current wide players..
Is he a better dribbler than Doku...no he isnt (but then again who is) but he is a better goal scorer
We need options and different ways of playing. He gives teams something else to think about...he adds to our ability to play on the fast break which automatically puts teams on the back foot. He isnt going to be physically bullied like Sav and Bobb either.
and he adds the long throw as well - will Pep use this....we will see but the other attributes mentioned are way more important anyway...his physicality defensively is going to be very important as well