The 29-year-old full-back believes the Norway striker is ‘much more of a killer’ inside the box than Mbappe.
Meunier played with Mbappe for three years at Paris Saint-Germain and he is currently lining up with Haaland since he made the move to the Signal Iduna before the beginning of this campaign.
Both Haaland and Mbappe are currently considered to be among the best footballers in the world despite their young age.
Many have compared the lethal forwards as to who is the better finisher but Meunier believes the duo have a contrasting styles.
“I can't compare the two, they're totally different. They're both quick, but that's it,” the Belgian said when asked about Haaland and Mbappe.
“Kylian is someone who looks for the one-v-one, he has a bit of everything. He makes me think of Thierry Henry.
“Erling on the other hand is more of a killer [in the box], he can beat any goalkeeper in the world. In the coming years, he can take the steps needed to be among the best players in the world.
“They will both be among the best players in the world when they're around 25 years old.”
“I think it's in his blood,” Meunier added of Haaland's lethality in front of goal. “He's an old-school striker in his way of playing. I really like that kind of striker.
“He has two good feet; he can improve his heading but honestly, he's only 20 years old and has time in front of him to be one of the best in the world.
“I really believe that in the coming years he will be kind of a [Robert] Lewandowski or a [Romelu] Lukaku, scoring 25-30 goals a season. He will be one of the best.”