You know what, I’ve just read Tim Stillman’s column for the week and he makes a really good point - the fact that we moved for Martinez first, who we clearly wanted as an inverted LB, makes me think that we’re probably also looking at Zinchenko for the same role? Otherwise it’s all a bit scattergun.
The links to Tielemans and Paqueta also make a lot more sense if you assume he comes in in that LB role - with an overlapping LB you probably want more of a 6/8 on that side who spends more time dropping into a double-pivot and/or covering the LB, but with an inverted LB you probably want more of an attacking 8/10 in left midfield who stays forward, with the LB stepping up to be the deep playmaker at the base of midfield.
I guess the good think about Zinchenko is he gives us both options.