BBC Sport's chief football writer, Phil McNulty:
When David Moyes left Everton for Manchester United in 2013, he left behind a club that had been a model of stability.
Moyes spent 11 years at Goodison Park, where he took Everton from struggling in the English Premier League to the European League, and even reached the qualifying stage for the Champions League in 2005.
The Scot had virtually complete control of football affairs, with the support of chairman Bill Kenwright who was grateful that Moyes had achieved what he did as a manager with limited funds.
To say that Moyes would return to a different Everton, should he secure a deal to succeed the sacked Sean Dyche, is a masterpiece of statement.
Since Moyes' departure to Old Trafford, Everton have had eight permanent managers with seven sacked. The stability and continuity he had known had become a thing of the past, and the football managerial landscape had changed in that period.
Everton are still struggling near the foot of the table, as they were when he took over from Walter Smith in 2002, but they will work with new American owners in the Friedkin Group who have already shown themselves to be ruthless by sacking Daiche only afterwards. Three weeks under control.
It is unlikely that there will be any of the patience that Kenwright showed during the occasional difficult times in Moyes' first spell, while he will work under director of football Kevin Thelwell, a situation he faced when he was in charge of Everton before, where he was making the decisions. On buying and selling himself, the decision maker in every football strategy.
Everton's position in the league may not have changed, but Everton Moyes knew that already. How he adapts to those changing circumstances will shape his future and the immediate future of the club.
