Allan and Ancelotti have a good relationship from their days together at Napoli, which could steer the Brazilian to England.
Sportitalia journalist Alfredo Pedulla claims that Allan will reject all other offers in favour of Everton due to the presence of Ancelotti.
The Italian international spent the 2019-20 season on loan at Valencia, and Atalanta are also keen on him.
With his club Watford being relegated to the Championship, 27-year-old Doucoure is a feasible option for Ancelotti.
Di Marzio reveals that Everton have opened talks with Watford for the French midfielder.