As I briefly mentioned in another thread, I think we need a bit of a formation to counter Madrid, which partly means giving Trent enough cover for us to manage the game.
It also means leaving one of our best players out (Jota) as I think off the bench he can be most effective.
We can win 3-1 and take it to extra time.
Alli
Trent Nat Kabak Robbo
Milner Gini Fab Mane
Salah Firmino
That is about the least creative midfield we could possibly put out. Thiago or Jones (or both) must start alongside Fabs. Of course I see you have Milner covering TAA.
A double pivot of Thiago and Fabs could also do that or simply Thiago replacing Gini, who is fine when we are controlling a game, however he doesn't win back the ball often and is one of the least creative of our midfielders, so the game is going to pass him by (as it did in Madrid).
At this stage and knowing we need someone at the head of midfield to help press and midfielders who can actually pass and hang onto the ball (we gave it away far too easily and far too often in Madrid) I'd go with :
Fabs - Thiago
.... Jones
Both Fabs & Thiago have good to great defensive stats so are fine covering for the other and we know both can go and support the attack.
However if we are using your deep lying forward in midfield so the FBs can overlap without fear of being left exposed then I'd go 3-1-2 and still without a place for Mane :
Milner ...... Fabs ....... Thiago
.............. Firmino
-------- Mo ------- Jota
All 4 midfielders are creative and can easily get the front two away.
That said Klopp is going to go 4-3-3 and start all of Mane, Thiago, Fabs + 1 (Gini, Milner, Jones, take your pick).