Watford - in the Championship 2014/15 - had Beppe Sannino, Oscar Garcia, Billy McKinlay and Slavisa Jokanovic. I make it ten in six years under the Pozzo family.
From Wikipedia;
Following Watford's takeover by the Pozzo family,
Gianfranco Zola was appointed head coach, replacing former centre back
Sean Dyche in July 2012. Zola took Watford to third position in the Championship in 2012–13 but resigned on 16 December 2013. He was replaced by fellow Italian
Beppe Sannino in December 2013.
On 2 September 2014, Watford confirmed the appointment of former
Brighton & Hove Albion head coach
Óscar García as the successor to Sannino. García, however, resigned from his position on 29 September 2014 for health reasons, having been admitted to hospital with chest pains a couple of weeks prior.
Billy McKinlay, who had only been appointed first team coach on 26 September 2014, was appointed as his immediate successor on the same day – his first position in management. A week later, McKinlay was released by mutual consent and former
Partizan coach
Slaviša Jokanović appointed in his place, apparently because the club favoured a head coach with greater experience.
On 4 June 2015,
Quique Sánchez Flores was announced as the new head coach as the replacement to Jokanović, who had failed to agree contract terms. Despite going on to lead the newly promoted Watford to a comfortable mid-table position in the Premier League and the semi-final of the FA Cup, it was announced on 13 May 2016 that Sánchez Flores would be leaving the club at the end of the season.
Following Sanchez Flores's departure,
Walter Mazzarri was announced as Watford's head coach starting on 1 July 2016. Mazzari's tenure as manager was terminated at the end of the season. On 27 May 2017
Marco Silva was appointed Head Coach. And now Watford have appointed
Javi Gracia after sacking Marco Silva.
