I suspect Hojlund is familiar with Italy and will make the necessary impact at Napoli. He's gained significant experience in the Premier League and may have met the needs of a good striker. Like Romelu Lukaku, I see potential in him to succeed in Italy. I also think this is a great signing for Napoli, as the player is very young and has a bright future. They could potentially sell him for a substantial sum in the future. I also think sending Akanji to Inter makes sense.
During his 2 seasons with Man United in the Premier League, Rasmus Hojlund failed to show his best performance, so the Serie A might be the best solution for Hojlund, because before joining Man United, Hojlund appeared quite impressive when he was still playing for Atalanta (even because of his performance, Man United had to spend 77 million Euros to sign Hojlund). So a return to Italy could be a chance for Hojlund to shine again.
Hojlund actually insisted on staying at Man United and preferred to fight for his place, but Napoli seems to have succeeded in persuading him. Hojlund now has that opportunity, but whether he succeeds or not, it will still depend on his own efforts.