Not the usual profile of player but as Al says just a few posts above, the man is world class. At 29 he not to old yet and if he wants to come then we surely have to take him.
I think 'behind closed doors' football is a factor here. The intensity we usually thrive on is muted without fans, so I wonder if Klopp thinks we might need a bit more control and creativity from midfield.
And he really likes the player, oft regarded as probably the best deep-lying playmaker in the business.
Could be all of this plus maybe Gini is off.
Could also be we move to the double pivot with Fabinho, Thiago controlling things in a 4-2-3-1. Pure speculation of course.
He's certainly a different option to the likes of Hendo, Milner, Gini.