It's still not a risk when the club is backed by an infinite pool of oil money. No transfer that City or Newcastle make can be seen as risky in the way that it is for us, Liverpool or Arsenal.
We signed Sancho for £70m and he was under immediate pressure to perform in a disfunctional team, Grealish is signed for £100 and had identical goal and assist contributions to Sancho in his first season but was under no pressure because City won the league anyway thanks to the billions they've invested in their squad and infrastructure over the years. Grealish is now bring praised like he's some big revelation and Pep is getting the credit for getting the best from this £100m player.
This isn't Mike Ashley's Newcastle signing a £63m player, this is a state investing a tiny fraction of their wealth in a vanity project that will inevitably succeed one way or another even if their next 5 signings were absolute duds signed for £50m each.