Introduction
Jonas Elmer (born 28 February 1988) is a Swiss footballer who currently plays for Rapperswil-Jona in the Swiss Challenge League.
Football career
Early career
Elmer was signed by English Premier League side Chelsea in the summer of 2005 from Grasshoppers. He featured regularly for the Chelsea reserve and youth teams in both the 2005–06 and 2006–07 seasons.
Elmer made his first start for Chelseas first team when coming on from the substitutes bench in a pre-season fixture against A.C. Milan, where he played the remainder of the match. His second appearance was against Wycombe Wanderers on 13 July 2005. Chelsea went on to win the game 5–1. He also came on as a substitute to make his third appearance for the club four days later as Chelsea F.C. beat Portuguese club Benfica 1–0 in another pre-season fixture.
Elmer looked as though he could have a promising future at Chelsea and signed a new two-year contract in early April 2006.
Aarau
On 25 June 2007, Elmer traveled back to Switzerland and signed a two-year contract with FC Aarau
Sion
On 18 May 2010, it was made official that Elmer had signed a three-year contract with FC Sion.
Winterthur
In 2012, he joined FC Winterthur in the Swiss Challenge League and made 21 appearances.
Toronto FC
He signed with Toronto FC on 1 August 2013. He mutually parted ways with Toronto FC the following off-season.
Rapperswil-Jona
In July 2015, Elmer returned to Switzerland with FC Rapperswil-Jona.