Chelsea sacked Conte and nearly his entire staff at the club's Cobham training ground after the Italian took a morning session yesterday, with Sarri now on the brink of taking over.
The club also believes that his deteriorating relationship with many players and him constantly bad-mouthing the club in public during press conferences means that they could get away without paying Conte his compensation. Carlo Cudicini is still at the club and he is likely to help Eddie Newton take training today.
After winning the title in his first season in charge, Conte has fallen out with the Chelsea board this term and bemoaned the deficiency of world-class signings in his squad.
"Thank You Boss", Terry posted on Instagram alongside a photo of the two of them holding the Premier League trophy.
During three years with Napoli, Sarri has not won a major honour but has guided the club to finishes of second, third and second again - behind Juventus in 2017-18.
Conte was appointed as Chelsea manager in the summer of 2016, leaving his role as Italy head coach to take the job at Stamford Bridge. But Sarri's appointment is now set to go through and he is expected to be joined by Chelsea legend Gianfranco Zola and Giovanni Martusciello, who he worked with at Empoli.