On 27 January 2021, Holm joined
Danish Superliga side
SønderjyskE, signing a four-year contract with the club. On 27 August of the same year, Holm joined Italian club
Spezia, before being sent back to SønderjyskE on loan for the rest of the season. On 31 August 2023, Holm joined
Serie A club
Atalanta on a season-long loan, with the deal reportedly including an initial €2 million fee, as well as an €8.5 million option-to-buy. == International career ==