Sivert Heltne Nilsen, born on the 2nd of October 1991 in Norway, is a central defensive midfielder by trade and currently plays for Aberdeen in Scotland. A hulking presence in the midfield, he stands at 6 feet (1.84 meters), and tips the scale at 12 stone, 3 pounds (78 kg). Fans of Aberdeen would recognise Nilsen on the pitch sporting the number 6 jersey.
Nilsen's current market value is estimated to be around £270k, as sourced from Transfermarkt. He remains committed to Aberdeen till the 30th of June 2027, having 1 year and 7 months left in his tenure with the Scottish club.
His professional career took off in January 2009 with Hødd, a club in the Norwegian OBOS-ligaen. Then, in January 2014, he transferred from Hødd to Valerenga in the Eliteserien, where his debut season saw him making 28 appearances. His stint with Valerenga was brief and by July 2015 he found himself at Brann, staying with the club till 2018 and making significant contributions every season.
In July 2018, Heltne Nilsen set off on his first adventure outside of Norway, when he transferred to AC Horsens in the Danish 1. division. This Danish chapter of his career lasted till August 2019 after which he transferred to IF Elfsborg in the Swedish Allsvenskan. While at IF Elfsborg, Nilsen saw action in 33 league matches and found the back of the net twice.
In January 2021, a significant change in scenery came for Nilsen when he transferred from IF Elfsborg to the Belgium club, Waasland-Beveren, in the Derde Klasse for a fee of approximately £400k. His stint with the Belgian club was a brief one as within a span of a year, he transferred back to his old hunting ground - Brann in Norway.
After a couple of seasons back home, he made his way to Scottish soil. Coming to the Premiership with Aberdeen in July 2024, he was bought for a fee of around £300k. Nilsen has since become a reliable figure for the Scottish outfit, making 33 league appearances to date. In the 2025-26 season, he already has seven first team appearances.
It's not just the league where the Norwegian has made decisive contributions. He has been instrumental in the League Cup for Aberdeen, scoring a goal in just one start. He's also been a part of Aberdeen's European adventures, making appearances in both the Europa League Qualifiers and the Conference League during the 2025 - 2026 season.
