On April 15, 2016, Werner was signed to a one-year extension with Färjestad to solidify his position as the club's third choice keeper at the age of 19. In order to progress his game, on 19 April 2016, Werner was re-loaned to IF Björklöven for the duration of the 2016–17 season. Assuming starting goaltender status with Björklöven, Werner appeared in 25 games in posting 12 wins as the club was unable to progress to the post-season. In the midst of the season, Werner was selected to the national junior team as Sweden's third choice goaltender at the 2017 World Junior Championships.