 In summer of 2008, AIK offered him a lucrative contract, but he refused as he wanted to concentrate on his team's performance in the league and continue his studies in the School of Naprapathy in Stockholm.In end of 2008, he was transferred to IF Brommapojkarna, newly promoted to the Allsvenskan.After the 2018 season with IFK Mariehamn, Petrović retired from football.