Career
He didn"t feature anymore for the first team that season. During the next season he only played a couple of cup matches before being loaned out to Sandefjord in the Adeccoligaen during the second half of the season, helping them to a promotion to the top level When he returned to Vålerenga he featured in two Royal League games.
In 2006 he spent the whole season on loan, again at Sandefjord, who had been promoted to the top-flight.
In 2007 he went on his third loan spell, this time to Adeccoligaen side Kongsvinger. He was recalled halfway through the season.
After the 2007 season he rejected a new contract and instead moved to Ham-Kam on a Bosman transfer. He spent two seasons there, first getting relegated from the top division, and then in 2009 another relegation from Adeccoligaen.
After the 2009 season he and several other players was sacked after rejecting a 70% wage-cut with the club blaming it on poor economy.
In 2010 he joined Second Division side Manglerud Star, before joining Kongsvinger in 2011. Førsund has played at numerous youth levels. He made his debut for the Norwegian U21 team on 1 January 2006 against Turkey U21.
In total he played 17 games for the U21 team, scoring 3 goals.
In addition, he has played 29 games at younger levels.