Complex sentence: However, his contract was terminated on the 30 January 2010; on 1 February he returned to England, signing a two-year deal with Portsmouth and making his debut in a 0--5 defeat at Manchester United five days later.
Split into simpler sentences: However, his contract was terminated on the 30 January 2010. On 1 February, he returned to England, signing a two-year deal with Portsmouth, making his debut in a 5--0 defeat at Manchester United five days later.