Why should i? I never believed in magical solutions and players who can transform teams all by themselves. Football is a team game, it's the compatibility between the individuals that leads to better synergies on the pitch and makes any system function properly. At Napoli, both Spaletti and Sarri made him the focal attacking point for sides that valued possession of the ball and intricate movement and passing. He was surrounded by players like Kvara, Zielinski, Politano, Lozano etc., who were perfectly suited to the way Osimhen plays the forward position.
To give you an inkling, last season, Napoli topped Serie A in 10+ passes that lead to shots and the vast majority of passes Osimhen received were in or on the edge of the box in central positions. He works hard to make the most out of whatever space he can find, but the team also works very hard to get him on the ball in dangerous/high value areas.
Who's going to create the same setup for him here? Rashford and Garancho, who are second forwards disguised as wingers or Antony who can't cross and creates one chance every six months? He'd look lost. Not as lost as Hojlund, but that doesn't say much.