For the 2001–02 season Persson signed with Västra Frölunda HC to play for their junior organisation, and attend the hockey gymnasium in Gothenburg.
In the playoffs Persson played five games, scoring one goal and an assist as Frölunda won the Swedish under 20 Championship.
Having played just three games with the under 18 team during the regular season, scoring one goal, Persson joined the team for the playoffs, leading Frölunda to a gold medal in the Swedish under 18 Championship by scoring four goals in a 10–1 win against Huddinge IK in the first game of the finals.
Not having played with the under 18 team during the regular season, Persson appeared in two playoff games, assisting on two goals in the quarterfinals against Leksands IF, and scoring one goal and an assist in the decisive game two of the final against Modo Hockey, which Frölunda won 6–1, winning consecutive gold medals at the under 18 Swedish Championship as well.
[7] In the J20 SuperElit playoffs Persson played five games, scoring one goal and five assists as Frölunda were eliminated in the semifinal against Modo Hockey.