Walter Mazzarri and Sinisa Mihajlovic are among options for Torino if they part company with Giampiero Ventura.
The Granata ultras have repeatedly urged Ventura to leave at the end of the season, but he has a contract until June 2017.
According to Sky Sport Italia, Mazzarri is the latest candidate to take over from next term.
Toro have already played with a three-man defence for several years under Ventura, so tactically it would not be a stretch.
The former Napoli and Inter Coach has been out of work since he was dismissed by the Nerazzurri in 2014.
Other potential options for Torino include current under-fire Milan boss Mihajlovic, Sassuolo’s Eusebio Di Francesco – who would be given the kind of free rein he wouldn’t have otherwise at San Siro – and Genoa tactician Gian Piero Gasperini.
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