 His tenure lasted exactly 100 days.As the team was obviously underachieving during the first round of the season, including a nightmare defeat at the hands of "eternal enemy" PAOK, he decided to resign in January 2010, saying that he "had joined Aris at the wrong time", and "couldn't find a way to inspire the players".A few days later, Katsikaris returned to the Spanish League to coach Bilbao Basket (or "Bizkaia" for sponsorship reasons), at the time the second worst team of the 2009–10 Spanish League season, with a record of 4 wins in 17 games.