"The images revealed a small fracture in his fibula. For that reason, he will leave the national team's January tour on Monday," the Swedish Football Association (SvFF) said on its website.
Olsson was the youngest player in the 23-man squad of Scandinavian-based players which had travelled to face the Ivory Coast and Finland in friendles on Jan. 15 and 19.
(Reporting by Philip O'Connor, editing by Ed Osmond)