Ronaldo is the men's all-time leading Euros scorer with 14 goals.
The 25-year-old has agreed a six-year contract at Stamford Bridge and is reunited with former Foxes boss Enzo Maresca.
Follow all the live action as the Netherlands look to progress at Euro 2024 against Romania
The 38-year-old has won three England caps and is currently working as a training goalkeeper with Gareth Southgate’s squad at Euro 2024.