sentences:  He also played one season for the reserve team of the Norwegian club IK Start as a 16-year-old, but rejected an offer of a professional contract with them and moved back to Iceland.Theódór joined Celtic in 2004.He made his domestic debut for Celtic against Hibernian in the last game of the 2006–07 season and played the full 90 minutes in a match in which he was named man of the match by the Celtic website.