Personally, I would swerve Neres. I get the hype, but I just can't shift the feeling that he'd be an expensive flop and we need another one of those like a hole in the head.
With that said, I do quite like the idea of having a mobile, more-or-less interchangeable front 3/4 like that lot across the park do; I am not a big fan of deploying Richarlison up front for a whole game, but the thought of him, Bernard and A.N. Other nippy/tricky forward swapping and changing and giving defenders nightmares does bring me great joy.
As for who might represent less of a gamble in that mould than Neres, I can't offer too many names though I can say that Zaha would also be a big 'nope' from me, as well. Malcom would obviously fit nicely into our current strategy, and I actually quite like the look of Traore (though he might be a bit too Deulofeu in terms of consistency levels).
Saving what I am sure will be by far the least popular sentiment for last, I actually don't hate the Mitrovic/Rondon shouts. Lets assume we can box off the wide forward for £25m-£30m and then Mitrovic/Rondon for c£15m, I'd be happier than were we to chuck £50m at Ajax for Neres. They basically give us all the physicality of DCL with better finishing and, in Mitrovic's case, a lovely bit of snide thrown in. A handy Plan B for when our silky front line isn't doing the job.