The Croatian had been linked with a move to become the new Leeds United boss.
The Leeds United owner has returned home to continue the White's manager search.
The Italian looks set to appoint his seventh manager in two years at Elland Road.
Ivan Juric has been linked with the Leeds United job.
Giuseppe Ursino admits that keeping Juric is looking increasingly difficult.
The Crotone manager has been linked with a move to Leeds this week.