Paris Saint-Germain and Manchester City are the two most expensive squads in the world managed by Mauricio Pochettino and Pep Guardiola respectively. Guardiola assembled his squad while most of Pochettino's squad were assembled before his arrival.
Guardiola took over at Manchester City in 2016 having previously managed FC Barcelona and Bayern Munich. He is one of the managers to have spent over €1bn in transfer spendings in his career, one of the managers to have done that with José Mourinho the other manager.
Pochettino's previous managerial experiences at Espanyol, Southampton and Tottenham have not involved huge transfer spendings and has only spent £100m as PSG manager after getting Lionel Messi, Sergio Ramos, Georginio Wijnaldum and Gianluigi Donnarumma for free.
Manchester City's current squad has a total value of €1.08bn while PSG's squad has a value of €990.25m. Guardiola sits atop a much more expensive squad than Mauricio Pochettino, rightly so with the managerial career he has had.