Marco Baroni will leave Lecce at the end of the month after failing to agree an extension to his contract, the Serie A club said on Tuesday.
Lecce said that Baroni refused an offer to "continue our relationship for another year with a salary increase for the coach and his staff".
Baroni led Lecce to promotion to Italy's top flight in 2022 and then secured survival on the penultimate day of last season.
Italian media report that Baroni wanted a longer extension to his deal which expires on June 30.