Richard Keys has written in his blog that he would not move for Watford's Marco Silva if he had the job of hiring Everton's next manager.
The 40-year-old is the bookmakers' favourite to replace Ronald Koeman, who was sacked almost a month ago and David Unsworth has been in charge on a caretaker basis since, winning one of his five games.
The Portuguese coach, who has won five, drawn three and lost four of his first 12 games as Watford boss has managed five different clubs since 2014.
And Keys says that the Toffees are better off steering clear of 'mercenaries' like him.
He wrote in his blog: "He wants to go to Goodison and he’ll do everything he can to get there. Will that include walking away though? If it does - how can he ever look a player in the face and demand loyalty? His credibility would be shot. The best option would still be that Everton can negotiate him out of Vicarage Road. My only question really is ‘why’? Have you seen his record? He’s a mercenary.
"Two days later [after quitting Hull] he was appointed as manager at Watford, where so far he’s won five, drawn three and lost four. Impressive? Not for me. Impressive enough to be handed one of the best jobs in English football? Not for me. In total he’s won just 11 PL games. Does that qualify him to manage Everton? Not for me.
He’s got talent, there is no question about that. He’s a man in a hurry though. He’s not a man for a ‘project’ or the long term. You can be sure if Everton get their man that he’ll see the move simply as a stepping stone to the next big one - and when he does Everton shouldn’t be crying ‘foul’. A leopard never changes its spots."
Whoever they choose, it has to happen quickly.
Under Unsworth, Everton are losing points at an alarming rate, with the Goodison Park side 16th in the Premier League table and three points above the drop zone.
The sooner they hire a long-term manager, the sooner they can start looking up.