I think that Bonucci is possible, but I would rather have signed Van Dijk. Firstly, Van Dijk is younger and we should be signing players that can improve for the future whilst Pep is at the club. Secondly, Van Dijk is much quicker than Bonucci. I'd worry about being exposed to the counter attack with a Bonucci-Kompany or Bonucci-Otamendi CB pairing. Even Stones isn't particularly quick and I think that Walker and Mendy will struggle to play the inverted fullback role. If we are going to have the likes of Mendy and Walker bombing forwards (as they are being brought in to do) then we will be left with two slow centre-backs trying to cope with 3 on 2 situations against the likes of Chelsea, Liverpool and Arsenal.