The 27-year-old was considered surplus for requirements in Chelsea after he had not settled under Enzo Maresca last season.
According to Transfer Guru Fabrizio Romano, AC Milan is the newest club that shows interest in Nunku while they want to strengthen their attacking options.
Nunku is supposed to insist on a movement away from Chelsea in the pursuit of the first team of football and would be open to a switch to the San Siro.
Former club RB Leipzig is also interested in the French international, with Bayern Munich already rejected a loan offer.