Disillusioned Rossi quits as Lazio coach
Delio Rossi quit as Lazio coach on Monday after deciding he did not have the full backing of the Rome club.
Lazio, league champions in 1974 and 2000, lifted the Italian Cup last month but finished 10th in Serie A.
"It has not been an easy decision," Rossi told a news conference. "I felt I was no longer at the centre of the Lazio project."
Club president Claudio Lotito had refused to confirm Rossi in the job in recent interviews while media reports have said former Palermo boss Davide Ballardini is favourite for the role.
Rossi, 48, took over at the cash-strapped club in 2005 and guided them to a third-placed finish in 2007 and Champions League football the following season.
Asked about speculation he would be appointed at relegated Torino, Rossi said: "Now I don't know what I will do, I don't have another team. The division doesn't matter."
With Rossi's future at Lazio unclear, media had linked former Catania coach Walter Zenga with the job but he joined Palermo last week.
With the exception of Lazio and Siena, where coach Marco Giampaolo has threatened to leave, the rest of the Serie A hotseats have been sorted out for next season with assistant Gianluca Atzori poised to take over at Catania.