Complex sentence: On 13 July 2015, Manchester United completed the signing of Schneiderlin for a fee of £24 million, which could increase to £27 million with add-ons; he signed a four-year contract with an option of a one-year extension.
Split into simpler sentences: On 13 July 2015, Manchester United completed the signing of Schneiderlin for an initial fee of £24 million. He signed a four-year contract with an option of a one-year extension.