Background
He is the son of former football manager Ronny Geson Gunnarsson.
He is the son of former football manager Ronny Geson Gunnarsson.
He is known for his trademark long throw-ins, good crossing ability and offensive play. Gunnarsson made his senior debut on 25 March 2012 against Sogndal, they lost the game 0–4. His contract with Odd expired after the 2013 season, and in October 2013 he signed a three-year contract with Vålerenga and joined the club in January 2014.
On 5 January 2016, he joined Scottish Championship side Hibernian on loan until the end of the 2015-2016 season.