Claudio Ranieri has signed a two year deal with Watford with his arrival expected to be formally announced later today.
It is understood he rejected options from Serie A in order to accept a job back in the Premier League.
More recently, he has taken charge of Roma and Sampdoria in Serie A and also has experience with the likes of Athletico Madrid and Juventus from a long career in management.
He joins with the Hornets sitting in 15th place, having picked up seven points from their opening seven matches this season.
The 69-year-old will undergo something of a baptism of fire in his opening weeks as head coach, with the next eight fixtures pitting Watford against all of the current top four, as well as the likes of Manchester City, Leicester and Arsenal.
His task will also initially be made harder with several of his players away on international duty ahead of his first game in charge against Liverpool on October 16.