Maresca still doesn't play every game at Sevilla. Even with their succeses they need to sell some to buy and trim their squad like every other team.. If Enzo wants to leave Juve can make a good deal for him, partic if Sevilla want one of our loan players or something.
As for his quality, he can enter with energy and turn the big games, we need that particular skill for sure - not even quality youngsters will guarantee this ablility.
Additionally we have DM's and AttackingMids but can always use a box-to-box like Maresca who can link the two.. Even in the Cappello days we missed this kind of player. Maresca would be a terrific signing IMO.