Klopp's never, as far as I know, played a midfield where the deepest mid, or one of the two deepest mids, isn't competitive in the air as well as being fit and with decent passing. Sure he played Stewart there once or twice, but only when rotating to a 2nd 11. In our current squad he's never tried TAA there, never played Gini there, never played Allen there while we had him, never given Lallana a few minutes there as per Yorky's suggestion of him as a playmaker.
I just don't see it. To be fair, Jorhginho isn't short and may well be decent in the air - I've not seen him play - or perhaps because VVD is so damn good Klopp feels he can sacrifice elsewhere, but still, I'd be massively surprised if we ended up with either a Kante or an Alonso type there. It just doesn't seem to fit what he's always done, and I don't see why he would change it either, given that we've been defending set-pieces pretty damn well for a while now, and actually looked more solid in midfield than we have. Why change that template? What is there to be gained? A fractional increase in our ability to break down teams that, actually, we're breaking down brilliantly as it is, and that without Coutinho, and without what Keita will add in terms of pressing, work in tight spaces and dribbling?
It's kind of similar with the calls for TAA to play in midfield. Why? As an 8 he wouldn't be able to use his crossing, and his creative skills could reach the level of someone like, say, Oxlade...so we'd put him there, and maybe gain a good midfielder but not one who's attributes would seem to stand out as exceptional for a midfielder either as an 8 or as a 6, while if we moved him from RB we'd find ourselves wishing for a RB with exactly TAA's attributes, who would cost us huge money to bring in. TAA is very rare as a proper RB who is also very effective when he does cut inside. As a shortish midfielder with decent stamina and a good to very good all round game who lacks height he's not rare at all. Lots of players fit that profile, indeed we already have several.