Klopp switched formation to 4-2-3-1 after Jota's introduction and magically Liverpool created 4 clear cut chances (scored the 2) before he reverted back to 4-3-3.
It's clear that 4-3-3 atm is not working the best for them for many reasons:
-defense not as reliable to play the high line without VVD and Matip, so more help from md needed,
- Firmino as false 9 is becoming less effective in threading through balls to Salah/mane,
- Thiago is totally 50% or less of what he can do when he plays as an interior.
On the contrary, when 4-2-3-1 was used:
- Jota's presence in itelf as a plus, as he is a great player. But especially:
- Firmino suddenly become less of a problem and more threatening as last line of opposition defense is occupied by Jota, so he has more space to operate in. Likewise for Sala, Mane who have more options (with Jota on the pitch) when receiving the ball out wide
- Thiago great in the double pivot, and Fabino-Tiago is a WC double pivot to say the least
- Defense more protected with double pivot
Hope Klopp starts with the 4-2-3-1 on the week and kicks Zidane's ass