Complex sentence: César Azpilicueta Tanco (born 28 August 1989) is a Spanish professional footballer who plays for English club Chelsea and the Spain national team primarily is a full-back but also as a centre-back.
Split into simpler sentences: César Azpilicueta Tanco (born 28 August 1989) is a Spanish professional footballer who plays as a defender for English club Chelsea and the Spain national team. A very versatile defender, Azpilicueta primarily is a full-back, although he can also play as a centre-back.