Hojlund, a 22-year-old striker, was let go by Manchester United in the summer after the arrival of Benjamin Sesko.
He then secured a loan move to Napoli, where he has been thriving, scoring four goals in his first six games.
Riemer made his comment ahead of Denmark's 6-0 win over Belarus, in which Hojlund scored twice.
Riemer stated, "Does he fit in Italian football? Yes. He had already proven that. But that doesn't mean he doesn't fit in English football."
Riemer also noted, "It is more important than which league you play in. Having a well-functioning team with players who take pride in doing good for others makes a big difference for a striker like Rasmus."
Riemer's comments suggest that Hojlund's success with Napoli is not solely due to the league he is playing in, but also the team's dynamics and the support of his teammates.
Hojlund's return to form has been impressive, and Riemer's comments offer insight into the factors that contribute to a player's success.