I disagree with people saying this fella isn't needed, and azpi has been great recently.
Azpi had one amazing game against city and the whole struggle of the season for him is forgotten.. wrong, azpi played well and so did Kante and so did luiz because they emphasis on them wasn't to attack attack attack, it was back to counter attacking football which they are used to and suited to. So luiz wasn't wondering out of position and being left 1 v 1, azpi spent most of the game in slow block defending and Kante got to play his natural game more despite the goal. Kante right mid position is not the problem it's his role in this team (quick Tika taka, possession ) that he's struggling with same as azpi.
The plan probably is to get Hysaj and move azpi back to centre back.. and save 100m on koulibaly get a solid as a rock centre back for free in azpi and give our attack another dimension with a rapid wing back tried and tested in the system.
Everyone is talking about the need for a new winger when it's two new wing backs that would transform us to city's level.. when they got walker and mendy it transformed them far more than buying mahrez or Bernardo silva has.