The usual suspect: Mahrez. Unless I am completely mistaken and Moura is some sort of a team grafter who tracks back well and is relentless for 90 minutes. With Mahrez you've got set piece delivery covered and a player who is experienced in the Prem. Might cost twice the price of Moura, but IMV worth it. The only question mark over Mahrez is whether he fits into a Jose type side, but I'm inclined to think the same with Moura.
Another option is Malcom, at 20 and producing pretty good football. More mouldable than either of the other two given his age.
edit: I know he might not be everyone's cup of tea and maybe he'd fail again, but Zaha has been pretty tasty all season and he'd come relatively cheap given we've got a high sell-on fee. He can frustrate, but he's also a difference maker.