Silva, 40, first made a move to English football in January 2017, and brought life back to Hull City in their ultimately unsuccessful bid to stay in the Premier League.
His promising work at the KCOM Stadium earned him a move to Watford last summer, and after a bright start to life at Vicarage Road, Everton attempt to land him as Ronald Koeman's replacement in October and November – but Watford stood firm and wouldn't let him go.
However, a poor run of form was put down to Silva losing focus due to Everton's interest, and Watford took the surprise decision to sack the Portuguese boss in January.
Silva is understood to want a Premier League return, but a move to Everton isn't secure given that West Ham United are also keen on Silva, as well as fellow Toffees target Paulo Fonseca as the Hammers look to wreak havoc on Farhad Moshiri's plans.
With David Moyes potentially losing his job at West Ham, the two teams are in the market for new managers this summer, as Everton look to replace Sam Allardyce – and they may just be targeting the same managers in an ironic twist.
Months on from targeting Silva and ending up with Sam Allardyce instead, Everton may hope to finally land their man, with contact already made, but West Ham could still have a major say on Silva's future.