The condition of the Italian national team is so dire now that even names like Claudio Ranieri, Stefano Pioli, Daniele De Rossi, and Fabio Cannavaro have politely rejected the offer to become the manager of the Italian national team. Gattuso accepting the offer is already a pretty good thing, because even though he may not be the most ideal candidate to manage the Italian national team, his name still carries significant weight in Italian football. This alone can provide some hope for the national team players, who are currently in a difficult position, to at least push forward and qualify for the World Cup.
I would rightly say that there is very little time to assemble a team that must win and convince.
The situation is complicated because of this reason, time.
Even if you had time it would certainly be difficult, with little time it becomes a desperate undertaking.