If Mendy continues to stick a token leg out he will not only concede a few penalties this season, but will also likely suffer another cruciate knee injury.
He's either tackling from the wrong side, standing square on or retreating back towards his own penalty area.
One weakness has been particularly exposed in a couple of our games so far against Arsenal and Wolves.
Mendy has been unaware of a player behind him on a flighted angle ball and both Bellerin and the lad yesterday, were able to bring the ball down and take him with ease before getting a shot off inside the penalty area.
Another area of major concern for me is that while I love Bernardo, he's taking a proper attacker out of the side with flank pace, which seems to expose Walker even more.
Again, Mendy on the other side is taking Sane or Mahrez out of the starting eleven.
Pep said this new formation is bringing rewards because we are creating more chances against teams behind the ball, but we always found a way last season, nine times out of ten.
This present set-up takes attacking pace out of the team in the boxes and there is less of a fear factor for our opponents when they see Sane and Sterling are not playing from the start.
Let's get back to what made us so successful, Pep can overthink things at times, case in point being Liverpool away in Champions League last year?
Personally, would like to see Mahrez moved into the number ten, with Sane and Sterling either side of Sergio, with Dave sitting deeper alongside Fern.
Means nothing now, obviously, but Mahrez needs to grow a pair to find his place on this team.
It must be difficult, but I would have told Sergio to piss off over that last minute free-kick.
Aguero might have hit the bar but outside of KDB, 20 yards from goal, there is nobody better in this league than Mahrez from free-kicks.