Lazio released an irate statement on their website and look set to launch legal proceedings against the 60-year-old coach.
“We note with surprise of the resignation of Mr Marcelo Bielsa, also on behalf of its employees, in clear violation of the commitments undertaken with the contracts signed last week and regularly deposited with the League and the FIGC with their required procedures.
“The Company reserves all actions to protect its rights. Entrusts the management of the team, currently in pre-season training, to Mr Simone Inzaghi.”