Career
He was then in charge of Hammarby IF from 2006 but was sacked when the club was relegated from the top flight in 2009. On 27 April 2010, Gustavsson signed a 44-day contract with the Norwegian Tippeliga-club Kongsvinger Illinois, but he decided later on to stay till the end of the season. After being relegated with Kongsvinger, Gustavsson did not use his option to extend his contract by one year, and left the club
In April 2012, Gustavsson joined the United States women"s national soccer team as an assistant coach to compatriot Pia Sundhage.
Madelaine Edlund scored the winning goal after Caroline Seger"s shot had hit the post. Gustavsson also led Tyresö to a 4–3 defeat by Wolfsburg in the 2014 Union of European Football Associations Women"s Champions League Final.
Tyresö became insolvent in 2014 and were kicked out of the 2014 Damallsvenskan season, expunging all their results and making all their players free agents. The Stockholm County Administrative Board published the employees" salaries, showing Gustavsson was among the higher earners at South East Kansas 75 000 per-month.