Football is not only about numbers. Nocerino had good numbers but that didn't make him a good player.
If there's any player from Roma worth buying it's only Zaniolo and only if we can ignore his knee problems from the past. Judging from the little I've seen I'd say we should've bough Abraham instead (different position, yes, but much bigger upgrade).
Since we signed Locatelli that means we should be playing 3 man midfield. Having both Locatelli and Pellegri as 2 out of 3 players, yeah, no thanks. Pellegrini as AMC? I surely wouldn't change formation for that guy, 100%.
We shouldn't even consider him but sadly I always had a feeling we'd go after him because he's Italian. IMO he's bench/rotational quality, nothing more than that.