​Portuguese legend Cristiano Ronaldo has questioned whether players who are transferred for huge fees in today's transfer market are actually worth the fees paid for them.

Ronaldo broke the world record for transfer fees in 2009 when ​Manchester United decided to sell him to ​Real Madrid for £80m, before he joined ​Juventus for £105m in 2018.

As reported by ​Marca, while speaking about the condition of the transfer market and how transfer fees are computed now-a-days, Ronaldo told Portuguese channel TV1, "It's difficult to make calculations in modern football."

He continued, "[Clubs] gamble a lot on potential and the football industry is different. Leaving the case of Joao Felix to the side, any player can go for 100 million euros, even without showing anything."

Speaking about the profile of players who can also now go for a very high price, Ronaldo stated, "There is more money in football. A centre back and a goalkeeper can go for 70 or 80 million euros. I don't agree [with it] but it's the world that we live in and you have to respect it."

The Portuguese maestro also hinted that he could ​choose to retire from professional football as early as next year at the age of 35. However, the five-time Ballon d’Or winner equally suggested he could continue until he turns 40 or 41.