David Moyes has agreed a deal to return as Everton manager, Sky Sports reported on Friday, more than a decade after the Scot left Merseyside for Manchester United in 2013.
The 61-year-old is set to replace Sean Dyche, who was sacked on Thursday after a difficult start to the season left the Toffees flirting with relegation.
They are currently 16th in the Premier League table, one point above the drop zone.
Everton were not immediately available to comment on British media reports that they had agreed a deal with Moyes.
The Scot's last job was at West Ham United, where he ended the London club's 43-year trophy drought by winning the Uefa Conference League in his second spell in charge before leaving at the end of last season.
He began his managerial career at Preston North End in 1998 before spending 11 years at Everton, transforming the team from relegation battlers into contenders for Europe, including a run to the Champions League qualifiers in 2005.
After Moyes left Manchester United in 2014 he managed Spanish club Real Sociedad and Sunderland.
He is poised to take over an Everton side who have won only three league matches this season and have become regulars in the fight against relegation, despite an unbroken top-flight run of over 70 years.
Club captain Seamus Coleman and Under-18s coach Leighton Baines acted as interim managers for Everton's 2-0 third-round FA Cup victory over League One (third-tier) Peterborough United on Thursday.
They host Aston Villa in the league on Wednesday.