Sampdoria rival Catania for Napoli's De Zerbi

Sampdoria are ready to demand Napoli midfielder Roberto De Zerbi in a deal for Maurizio Domizzi.
Domizzi is in co-ownership with Samp and Napoli, where sports chief Pierpaolo Marino wants to sign the player outright this summer.
Samp are keen on De Zerbi, but face competition from Catania.