He's not like Ben Arfa. Ben Arfa was all about the dribble, end product secondary. Cherki can dribble a bit but that's not really what he's all about, it's his tight space vision and passing and creativity that is more prevalent.
I get he's flawed without the ball, and may be a bit of a dick, but for 25m, when you think what we've spent on some absolute fucking munts - even Kulusevski cost us nearly double what Cherki would cost - and Cherki at worst would give us equal versatility as Kulusevski (he can play anywhere across the front RF/LF/10) and much better final third reliability.
All we ever seem to buy is flawed footballers, we might as well have a value one who at least has some fucking reliable ability.