Ex-Everton and Southampton boss Koeman replaced Setien as Barca coach.
Henrik Larsson won two La Liga titles and a Champions League trophy at Barca.
Former Barcelona forward Henrik Larsson has joined the Catalan club's coaching staff after putting pen to paper on a two-year deal.
Ex-Sweden striker Larsson set up both goals in Barcelona's 2-1 win over Arsenal in the 2006 Champions League final.
The 48-year-old spent two seasons at the Camp Nou as a player from 2004 to 2006, winning two Spanish top-flight titles and a Champions League trophy.
Larsson, who earned 106 caps for Sweden, will be linking up with new Barca coach Ronald Koeman and Former FC Twente and Hoffenheim head coach Alfred Schreuder.
Koeman left his position as Netherlands boss to replace Quique Setien as Barcelona head coach on Wednesday after the Blaugrana's 8-2 loss to Bayern Munich in the Champions League semi-final.
Since Larsson quit playing football in 2009, he has coached Landskrona, Falkenberg, and Helsingborg in his homeland.
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