Sassuolo interested in Napoli hitman
Calaio arrived in January from Siena, where he had a five year spell at the club playing 148 matches and scoring 46 goals.
New Napoli coach Rafael Benitez is reportedly eager to get another striker next to newly signed Gonzalo Higuain which had a price tag of around €30 million.
Calaio is expected to be at the back of the queue at the Partenopei and is likely to head out the gates of the San Paolo.
Calaio has made in total 118 apperances in all competitions for Napoli, scoring 40 goals from 2005-2013.