PSG have signed two players so far and these are Vitinha and Nuno Mendes. They have spent 80 million euros in total but I don't have any doubt that they have much more money left in their budget. However they aren't rushing their transfers now. We still haven't seen a big move from them. Maybe it would be nice for them to consolidate the team more with big transfers now. However their main problem was with the management and they have made their move for that as well. Time will tell how they will play in the CL this time.
We can only guess. Last season they had a coach who rarely played in European competition. I think that's one of the factors they failed. They have a lot of good players but don't have an experienced coach in Europe. This season they have changed coach, Christophe Galtier. Christophe Galtier also looks like Pochetino, not much experience in Europe. But I don't know what the future holds, but I'm still not too sure about Christophe Galtier.