Goal understands United are willing to listen to offers for the Belgium international but the club's valuation of the player and his wages have proved to be a stumbling block for the Serie A side so far.
Napoli sporting director Riccardo Bigon reportedly met the player and his representatives in Belgium this week with the Premier League side hoping to recoup at least £13 million of last summer's £27.5m investment.
"Fellaini is one of the names of our midfield, but he's not the only one," De Laurentiis told Radio Kiss Kiss.
"His hairstyle could be perfect for the Neapolitan style. I like his 'lion-hair', I have introduced Inler like a lion, Fellaini could compensate his lack of hair."
The Italian outfit have been in the market for a midfielder for much of the summer, having made enquiries regarding Tottenham midfielders Etienne Capoue and Sandro.
An agreement in principle is in place for Liverpool midfielder Lucas Leiva to be reunited with Rafa Benitez in a season-long loan deal but the club are eager to pursue the possibility of signing Fellaini.