JEF United Chiba have terminated the contract of manager Amar Osim after a disappointing season saw them finish in 13th place in the first division, Chiba officials said Tuesday. Osim took the managerial reigns from his father Ivica Osim, currently in hospital after suffering a serious stroke, in July last year after Ivica was appointed Japan national team coach. Amar Osim guided Chiba to victory in the 2006 Nabisco Cup but the team has become a pale shadow of the one Ivica turned into J. League title contenders after taking charge in 2003.