The 'Run This Town' rapper, who watched the UK boyband perform at the Brits Awards in London earlier this week, claimed that they could be as popular as 'N Sync.
"I liked JLS, I watched them do their show. They're a good band and remind me of 'N Sync, a band who do the boy band thing well," he told The Sun.
"They put on a class performance and I think they will go on to be as big as 'N Sync."
JLS recently inked a US contract with Jive Records and confirmed that they will release 'Everybody In Love' as their first single Stateside.
'N Sync reached number two with their self-titled debut album on the Billboard 200. Their follow-up records No Strings Attached and Celebrity both topped the charts. They have sold an estimated 56 million albums worldwide.
> JLS: 'Past boybands had it easy'