De Boer said: "Wesley Sneijder got a message yesterday from Henk ten Cate. He was the assistant coach of Frank Rijkaard. He [Messi] made his debut under Rijkaard against Espanyol and said Yamal is further than Messi at this age. Messi really got kicking when he was 21, so at the moment he's further and better at this age than Messi when he was 16, 17, 18.
"The only difference for me is the consistency. Messi stayed on for 10, 12, 13 years on an unbelievable level. Can he do that? Can he keep the hunger? Can he stay fit? Can he stay with both feet on the ground? All those things because people are always saying, 'Hey, why he's dying his hair?' I never judge people about what they're doing because you have to really know them and I don't know him as a person. So for me, let him do what he wants and he seems a very humble guy and he's not afraid to take the ball, every time when he loses the ball the next time he tries it again.
"He's a real threat every game almost so at that age performing like this, he's further than Messi, but for me Messi is still the number one I ever seen."