Career
He currently is a free agent after leaving Lillestrøm at the end of season 2015. Johan Andersson was reunited with his former coach Janne Jönsson from his early Landskrona career when he joined Stabæk ahead of the 2008 season. He scored two goals in his league debut for Stabæk at home against Lillestrøm in a 4–2 victory.
He started all Stabæk"s 7 cup games including the final against Vålerenga which they lost, scoring 5 goals in the process.
On 17 January it was reported that Andersson would need an operation on his knee, which would keep him out for most of the season. He would not be ready before late July.
He made his comeback on 29 July against F.C. Copenhagen in a Champions League qualifier as a late second-half substitute. After five more substitute appearances, he started his first game of the season on 19 September against Odd Grenland, scoring a goal in a 2–1 victory.
Andersson played 22 games and scored four goals for Stabæk in 2011, and joined Lillestrøm ahead of the 2012-season along with his team-mate Pálmi Rafn Pálmason.