Cristiano Ronaldo is a Portuguese professional footballer who plays as a forward for Spanish club Real Madrid. He is considered the most expensive player in football history after his transfer from Manchester United to Real Madrid for £80 million. Ronaldo began his career with Sporting CP in Portugal before moving to Manchester United, where he won several trophies including the Champions League and Ballon d'Or. He is now the highest paid player in the world according to his contract with Real Madrid.