They've always been combined with quality homegrown players like Walker, Stones, Barry, Sterling, Milner, Ake, Grealish, etc. Like it or not, you have to have a core of homegrown players, so then you have to think about who's the talented young English players.
There are a few options for returning players - Delap, Trafford and Rogers - but I don't think any of those would come to spend most of their time on the bench. Palmer's the other one, but that's not happening.
Then you have the ones where there's no chance, namely Saka and Bellingham.
The you have players that potentially could be good enough, but aren't in positions we need right now, like Guehi and Branthwaite.
So you're left with, by my count, four potential targets: Wharton, Eze, Livramento, and Gibbs-White. Of those, Eze is 27 by the summer, and I reckon Newcastle are unlikely to sell Livramento.
They might genuinely have just figured he's the best homegrown player that's available in a position we need. I think the problem will emerge if he's all we bring in to replace someone like KDB, rather than being brought in alongside someone like Wirtz.