Well, you, in my opinion. Adding a €15m+ player like Nainggolan to CM when it is already the strongest area of the team; already has Pirlo and Vidal established, already has brought up Pogba vs Marchisio selection battles, already has another CM having to play LWB, already has Marrone looking for another club, and several of our best prospects also play in this position. In that respect those resources could be better spent elsewhere, because there is no point in stacking up big fee big salary players in one area whilst going light in others.
For the record I happen to like Nainggolan a lot, as a player.
Pirlo might leave next year, Marchisio is inconsistent, Pogba regardless of his talent is still a youngster, Asamoah is playing as LWB and will continue this year, the likes of Marrone and Padoin aren't good enough even for a bench. Padoin is more suited to play as RWB as he had some decent games there.
What resources? They were talking of a swap deal including Marrone and Beltrame. They aren't exactly the hottest commodity around.
What prospects do we have there? Appelt is not good enough. His physique is poor. Buoy, Kabashi? I can't see any hot prospect lurking around ready to break into our senior team. Correct me if I'm wrong.
What big salary? He would get something like 3m per year and sales of Quag, Matri are more than enough to finance that. Even regardless of their sales we could afford him. In return we would get good established player, fairly young who will probably generate lot of interest in years to come and would be valuable addition to our midfield. Having Vidal, Pirlo, Marchisio, Pogba and Nainggolan and considering our ambitions this year which are I believe familiar to all of us would give us more competitive edge.