Where was his talent until the age of 24? He wasn't a great talent before. He had his first good season in the briliant Leicester season. Surprsingly Vardy too.
I don't want to say he is a one season wonder, but 15/16 nearly every Leicester player played above their potential.
Okay, Kante proved his form at Chelsea. Mahrez was solid last year, not more. I'm not convinced he can player another year like 15/16.
At 24 he would have been adjusting to a massive step up in league. Just because someone hasn't dominated by a certain age doesn't make them crap. Drogba moved to Chelsea at his age ffs.
If Kante can further prove himself in a defensive unit such as Chelsea, I don't see why Mahrez can do the same in an attacking team such as ourselves.