Their transfer net spend since 20/21 was 1,85m (income). And they have a completed stadium now.
No idea what their transfer budget or what their salary cap is, but I am guessing it's high.
In case they need to make sales, they are good at doing those too and have plenty of underperforming yet marketable players they could sell.
Edit: Yeah, I hadn't considered Mbappe's singning bonus
Net transfer is mute point. They paid 150M signing bonus for Kylian and in this equation he cost 0, same for other free agents.
They are wealthy, they 300M more in salary cap over us atm, no doubt.
But they don't have a single defender who can play from the back atm, not a single controlling midfielder, even their attack lacks a true RW.
They have bigger needs than most teams. They are likely to need sales, so they will need to make the right decisions in the market. Selling the wrong players or signing the wrong players (preferably both) will set them back significantly now.
Obviously, if they get it right, they will have the best team in the planet, since they already have the star power and the GK for it.