sentences:  Sigurður announced his retirement in December 1991 having failed to appear in a competitive game for Arsenal since October 1990 due to a back injury.He came out of retirement to rejoin IA Akranes in 1992 and later played for Swedish club Örebro SK in the 1996 and 1997 Allsvenskan seasons.He signed for Scottish club Dundee United in November 1997, where again injury reduced his opportunities to play; he made 43 league appearances, scoring once against Motherwell.