The 25-year-old has been in discussions over a new contract since the start of February, with reports earlier this month claiming a deal was close to being agreed.
The Italy international, whose current deal expires in June 2019, has been in impressive form this season for Napoli, contributing 12 goals and seven assists, and wants a new deal to represent his value.
His agent, Ciro Venerato, appears now to be turning the screw on the matter by revealing that the forward is becoming increasingly frustrated at not being offered what he feels fit by Napoli.
Venerato told Rai (via talkSPORT):
“Insigne is tired of waiting.
“He has four clubs that have offered €4.5m (£3.9m) and a sponsorship deal from a multinational company that would pay €2.5m (£2.1m).
“He’s willing to take less to just to stay with Napoli but wants €4m (£3.4m) per season. Napoli offered €3.5m (£3m) and no more, inclusive of commission to agents who will take about 5%.
Inevitably, Arsenal will once again be linked with a move for Insigne, even more so this summer should Alexis Sanchez leave the Emirates, and Transfermarketweb.com now suggest that the Gunners are preparing a bid of up to £33million to land the diminutive Italian.