The Toffees have earned two wins from their eight matches under caretaker manager David Unsworth, lifting the team out of the relegation zone. However, it was never a permanent deal.
Allardyce watched from the stands as Everton routed West Ham at Goodison Park on Wednesday night before it was confirmed by the club on Thursday that the former England manager has signed an 18-month contract at Everton.
| #EFC can confirm the appointment of Sam Allardyce as the Club’s new manager on a deal until June 2019. pic.twitter.com/fa9cjsE0HN
— Everton (@Everton) 30 November 2017
The 63-year-old, who had been out of work since leaving Crystal Palace in May, becomes Ronald Koeman's permanent successor and will try to bring the club closer to European positions after a summer of heavy spending.
Everton becomes the seventh Premier League club for the experienced manager, who took charge of England in an ill-fated one-game spell.
In an official Everton statement, Allardyce said: "The attraction of the club itself, the people I've known at the club - Peter Reid is one of my best mates, so are Andy Gray and Paul Bracewell whom I worked with at Sunderland - these people have always made me aware of just how special and unique a club Everton is and I feel really enthused and energised to come in as manager."
"I've always thought Everton was a great club. It is a great club. Obviously, the club has gone through a difficult spell and hopefully I can put that behind us as quickly as possible and start looking upwards again."
"Because, ultimately, it's the ambition of the club, the ambition of the owner and the board, allied to the fact that it's Everton and all the fantastic history, which have proved to be key for me."