No one is without a doubt better than Marchisio, but then it depends on which version of CM8 we are gonna get.
It irks me to see people deploying this defeatist mentality of "we can't do better than Matuidi" "there aren't any available options on the market"
It's the management's job to identify targets, and I'm quite sure there must be at least 2-3 better options (possibly more expensive, but with more upside and much younger).