sentences:  Bille Nielsen started his senior career with Danish 1st Division club BK Frem.He was promoted to the first team squad in the summer 2005, and made his debut on 31 July 2005 against Fremad Amager.He signed a two-year contract with Frem in October 2005, and was on trial with English club Newcastle United in November 2005, and also had a trial with Portsmouth F.C..