Van Bommel told Voetbalzone: "When Messi joined Barcelona's first team, he didn't play as many games in the beginning compared to Yamal now. So if you compare the two at that age, Yamal is better now.
"Maintaining this level in the long term is the hardest thing. Messi has been at this level for 20 years. That is exceptional. If Yamal wants to catch up with Messi in terms of goals, he will have to score another 500 or so. That is almost 30 per season.
"Is Yamal the best in the world right now? No, he's not, but he's well on his way. I don't think there's one player who stands out above the rest right now, because there are just so many good players."