Complex sentence: On 30 June 2014, his contract with Benfica ended and he left the club, but on 24 February 2015, Silva announced that he had returned to Benfica and had signed a five-year contract.
Split into simpler sentences: On 30 June 2014, his contract with Benfica ended and he left the club. On 24 February 2015, Silva announced that he had returned to Benfica and had signed a five-year contract.