The agent of Krzysztof Piatek says Genoa are yet to receive any formal offers.
He has been linked with Chelsea, Juventus and Barcelona.
“Many clubs have contacted us over the last few weeks, but I won't name them," agent Szymon Pacanowski told CalcioNapoli24.
“However, there has been no formal offer from any club, including Napoli.
“His value has certainly risen over the three months in Serie A, but right now we are happy to remain at Genoa."