The Englishman led them from the fourth tier of Swedish football to its top division, and also helped them win the Swedish Cup in 2017.
Potter then managed Swansea City and Brighton before joining Chelsea in 2022, but was sacked from his role at Stamford Bridge after seven months.
Former Denmark striker and Blackburn Rovers boss Tomasson was fired from his Sweden post after a 1-0 defeat at home to Kosovo in Monday’s World Cup qualifier.
Despite a stellar forward line of Liverpool’s Alexander Isak and Viktor Gyokeres of Arsenal, the Swedes drew with Slovenia and lost to both Switzerland and Kosovo in their opening three group games.
But, having won their Uefa Nations League group, they are still on course for a play-off spot to give them another chance of reaching next summer’s World Cup in North America.
