Onana, Neves, Mainoo is the type of hyper-balanced, technical, athletic, silk and steel midfield we've dreamed of for literally a decade plus - and Onana's the oldest of them at 22.
Neves as the metronome 80+ passes a game conductor. Mainoo as the ball carrier. Onana mopping up in behind capable of eating up ground and dominating aerially. And that's pigeonholing them into specific roles...all three have wide (and complimentary) skillsets beyond that.
Sadly it's impossible with the budget we have - unless maybe Neves stays at Benfica for another year and we can take a serious run at him then. Or we get serious and actively try to move Rashford.
Whisper it but I might even sell Bruno if we could make it happen and he's definitely not a player I'd be wanting to lose.