 Still a defensive cornerstone in 2008–09, Arzu featured in 34 contests – mostly as a centre back – but Betis was relegated for the first time in nine years.In August 2011, after only taking part in 17 games as the side returned to the top level, he was released from his contract.In the penultimate day of the 2011 summer transfer window, Arzu signed with Gimnàstic de Tarragona in the second level.