Arnold played two years for the
Boise State Broncos and turned professional in 2011. After that he played two years for the
Allianz Swans Gmunden, where he scored 15.5 points per game in his last season. After his stance in Austria, he left for
Namika Lahti in the Finnish
Korisliiga. After a successful individual season, in which Arnold averaged 18.6 points a game, With Kataja he won the Finnish Korisliiga. On June 19, 2015, he signed a one-year deal with Belgian club
Belfius Mons-Hainaut. On July 23, 2016, Arnold joined
Rethymno Cretan Kings. The following season, Arnold joined
Hyères-Toulon of France's
LNB Pro A. In 2017, Arnold signed a two-year deal to play for JDA Dijon in France, but was released from the team in November 2018 for failing to be a team player and poor attitude. On December 12, 2018, he has signed contract with
Crailsheim Merlins of Germany's
Basketball Bundesliga. In May 2019, Arnold was officially released from the Merlins for poor attitude and inability to function after an elbow injury left him unable to shoot. ==References==