Juventus forward, Cristiano Ronaldo, on Friday, promised to continue giving his 100 per cent until he eventually decides to hang his boots.

Ronaldo also said he was sorry he couldn’t promise his supporters another 20 years at the top.

The Portugal captain said this while celebrating his 36th birthday and 20th year as a professional footballer.

The Juventus number 7, who is widely regarded as one of the best players in the history of the game, posted a heartfelt message to his 260 million Instagram followers to mark the occasion.

Ronaldo said: “36 years old, unbelievable! It feels like it all started yesterday, but this journey is already full of adventures and stories to remember. My first ball, my first team, my first goal… Time flies!

“From Madeira to Lisbon, from Lisbon to Manchester, from Manchester to Madrid, from Madrid to Turin, but above all, from the bottom of my heart to the world… I have given everything I could, I never held back and I have always tried to deliver the best possible version of me.

“In return, you gave me your love and admiration, your presence and your unconditional support. And for that, I will never be able to thank you enough. I couldn’t have done without you.

“As I celebrate my 36th birthday and my 20th year as a professional footballer, I am sorry that I can’t promise you 20 more years of this. But what I can promise you, is that as long as I keep going, you will never receive less than 100 per cent from me! ‘Thank you once again for all your support and for your kind messages and initiatives during this day. It means a lot to me and you all have a special place in my heart.”

Ronaldo has won an incredible 29 titles across a club glittering career with Sporting Lisbon, Manchester United, Real Madrid and Juventus.