Diakite is off contract in June.
"We're in a phase where we are quite far away, almost close to extinction," Ulisse Savini told Radio CRC. "We've agreed terms, but it seems that Napoli don't have the certainty required to complete the transfer.
"We are at Napoli's disposal, but I am obliged to look around as that is my job.
"Napoli have told me that they are waiting for certain situations at the club to be resolved, but if a player is good then it doesn't matter who is the Coach of the team.
"I understand that Walter Mazzarri wants my client so we are rooting for Mazzarri to stay.