Monaco need to invest in defenders big time. They now have the best attacking force in France by a mile, and Hulk is expected to be announced to go to Monaco soon. PSG have a good defence though, and with that solid base they're going to be there or there abouts. Thiago Silva is one of the worlds best in that position. Sahko is one of the best young defenders on the planet right now. Monaco have Ricardo Carvalho...
None of them will be any CL threat (well obviously Monaco aren't in the CL yet, but yeah) though. The French league has to evolve and be much better for any of them to be big time players imo. Money talks, but not loud enough when it comes to Europe. Speaking of Europe, I expect the English teams to go back to dominating Europe very soon like they did years ago. In a few years, we will once again have 4 teams going for the CL winning spot, instead of just United and Chelsea.