Former England manager Roy Hodgson has been appointed as Claudio Ranieri's successor at Watford.
Hodgson, 74, takes the role on a temporary basis until the end of the season and is joined by trusted lieutenant and ex-Hornets chief Ray Lewington.
An official club statement said: "Watford are delighted to confirm the appointment of Roy Hodgson as the club’s manager.
"The ex-England national team boss is joined by his trusted assistant Ray Lewington, who managed the Hornets so admirably from 2002 until 2005.
"Best known for leading the Three Lions during a four-year spell which took in Euro 2012, World Cup 2014 and Euro 2016, Hodgson has also managed extensively at club level in England and across the world.
"Most notably in this country, he led Fulham to their highest ever Premier League finish and Europa League qualification, where the Cottagers knocked out the likes of Juventus, Wolfsburg and Hamburg on their way to the final, eventually losing to Atletico Madrid.
"Named 2010 LMA Manager of the Year for his Craven Cottage exploits, Hodgson was appointed Liverpool manager the following season and later took the reins at fellow Premier League clubs West Bromwich Albion and Crystal Palace.
"Hodgson and Lewington begin preparations immediately for Watford’s next Premier League fixture, which is away to Burnley on Saturday, February 5.
"Welcome to Watford, Roy. And welcome back, Ray!"
Hodgson appeared to have called time on his managerial career last May following a successful four-year spell at Palace.
He takes charge of a Hornets side sitting 19th in the Premier League, without a win in their last eight league games.
The Hertfordshire club parted ways with Ranieri on Monday evening after the Italian oversaw 10 defeats in 13 league outings.
Hodgson's first match in charge will be a crucial relegation battle against Burnley at Turf Moor.