Hojlund has expressed his gratitude to United for the opportunities he received during his time at the club.
However, he stated that he had no choice but to leave United due to the club's transfer policy.
The Danish international has said that he is looking forward to a new challenge in Naples and is excited to be a part of the Napoli squad.
Napoli have been active in the transfer market this summer, and Hojlund is their most significant signing so far.