Vålerenga
After several good seasons at Ullern, Dutch club Ajax wanted to sign Horn Myhre, but before signing him, wanted to have him on a week of training with the club first. [2] This gave Eliteserien club Vålerenga the time to snap him up first, and on 5 January 2017, Horn Myhre signed a two-year contract with the club. [4] His first season would see Horn Myhre play mostly for Vålerenga's second team in the Norwegian Second Division, but in October he would finally get his debut for the first team, in a 3–0 win over Haugesund, after being subbed on in the 88th minute. [3] [5]
On the last day of January 2019, Horn Myhre signed a new contract with Vålerenga, lasting until the summer of 2021 [6] Later that year, in early April 2019, Horn Myhre was loaned out to Bodø/Glimt. [7] Originally the loan was meant to last until 17 May, but in early May, Horn Myhre returned to Vålerenga, after only three appearances. [8] The 2020 season culminated with a bronze medal for Horn Myhre and Vålerenga, their best place in the league for ten years. [9]
Brann
On 30 April 2021, media reported that Brann had signed a pre-contract with Horn Myhre, as his contract with Vålerenga was ending on 30 June. [10] This was later confirmed by Brann's head coach Kåre Ingebrigtsen. [11] Two weeks later, after the transfer deadline, Brann confirmed that they had signed Horn Myhre from 1 July. Initially Brann had wanted to buy Horn Myhre out of his contract with Vålerenga to bring him to Bergen immediately, but talks with Vålerenga had failed. Additionally, because the summer transfer window didn't open until 1 August, Horn Myhre would not be able to play any official games for Brann until that date. [12] His first game would come on 1 August, playing the full game in a 3–0 cup tie win against Fana. [13]
In his first season at Brann, the club struggled and eventually finished fifteenth in the Eliteserien, resulting in being relegated to the Norwegian First Division. [14] The next two seasons Horn Myhre played almost every league game. [3] In July 2023, with only a year-and-a-half left on his original contract, Horn Myhre signed an extension with the club, running through the 2027 season. [15] After the 2024 season, Horn Myhre was named Brann Player of the Season from Brann's supporter group Bataljonen. [16]
Ahead of the 2025 season, Horn Myhre was named as Brann's new vice-captain. [17] After Brann's second place in the 2024 Eliteserien, Brann was qualified to play European football in the 2025–26 season. In the play-off round, Horn Myhre scored against AEK Lacarna in a 2–1 win at home, that would eventually lead Brann to their first UEFA Europa League in eighteen years. [18] [19]
At the end of the summer transfer window in 2025, after several rejected bids from newly promoted La Liga side Elche, Horn Myhre's former club Bodø/Glimt tried to sign him for 40,000,000 NOK. In the media Horn Myhre was open about wanting the move, and that playing UEFA Champions League football and a new challenge was his main reason for his interest in the move. [20] Brann would go on to reject the bid, and Horn Myhre would stay at Brann. Later, Horn Myhre apologized to the fans, although he stressed that he had meant what he said, but that it could have been kept out of the media. [21]
Austria 
Moldova