Speaking of Nagelsmann, I much prefer him over Galtier, Nagelsmann is a young coach who carries modern football. it doesn't matter what the French public thinks, but what is certain is that he has the capacity as a potential coach. that is why, Nagelsmann was targeted by several big clubs.
So far, there is only information that PSG is in talks with Nagelsmann, and this could possibly be a profitable deal for both parties, since PSG with Nagelsmann can become significantly faster, which they lacked with Galtier. PSG have good financial resources, so I have no doubt that they will be able to make a good offer. But first, we should wait for official information, because so far it just looks like a rumor.
If Nagelsmann joins PSG, I'm sure he will make transfers from the Bundesliga. After Neymar and Messi are gone, PSG, which will be missing as an Offensive, needs players to direct its attacks. Nagelsmann is a successful and young manager. I am sure he will be very successful if he joins PSG.