Pogba, who rejoined United from Juventus in 2016, scored five goals and provided four assists in 30 Premier League appearances last campaign.
The 24-year-old has started the current season strongly with two goals and an assist in the first two league matches and Martial believes his compatriot can reach the next level and become the best footballer in the world.
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“Paul is very mentally strong and he is very sure of himself,” Martial told United’s website (www.manutd.com).
“He is a big guy, he is...