Arnason has played all of his his last two seasons for Chicago. He was drafted by Chicago in 1998. His best season was 2002-03 when he had 39 points.
Achievements 1997- MJHL Rookie of the Year 1998- USHL First All-Star Team 1999- WCHA All-Rookie Team 2000- WCHA Second All-Star Team 2002- AHL All-Rookie Team 2002- Dudley "Red" Garrett Memorial Trophy (AHL Top Rookie) 2003- NHL All-Rookie Team