Salah is currently preparing for the forthcoming Africa Cup of Nations in Gabon, where Egypt are set to face Mali, Ghana and Uganda in Group D of the competition.
And Cuper - who twice reached the final of the Champions League with Valencia, and finished second in Serie A during a spell with Inter Milan - believes his star player can go on to become of the biggest names in world football.
“Salah looks great," Cuper said. "On top of his strengths as a player, he’s also a good person. He’s professional, experienced and very humble, like virtually everyone here.
"If he continues the way he’s going, he can become one of the best players in the world. I would love that for him."
With Egypt, who last won the tournament in 2010, aiming high in this month's tournament, Cuper believes Salah will play an integral role.
“We have a base of excellent local players, courtesy of a very competitive domestic league," he said. "We then have several top-quality players like [Hull's Ahmed] Elmohamady, [Stoke City's] Ramadan Sobhi and [Arsenal's Mohamed] Elneny, who play in the Premier League, plus Salah.”
© 2018-2026 Soccer S.r.l. – EU VAT IT09305501000 - all rights reserved. The AS Roma names, logos and artwork are registered or unregistered trademarks of Soccer S.r.l. All other trademarks may be the property of their respective holders.