Colombian defender Rivas, who played for River Plate in Argentina last season, has put pen to paper on a four-year contract until 30 June 2011.

• 上赛季在阿根廷河床俱乐部效力的哥伦比亚后卫里巴斯与俱乐部签订了一份为期四年的合同，合同期至2011年6月30日。