Watford are unwilling to let Marco Silva leave for Everton at any price, sources close to the Hertfordshire club say.
Reports on Sunday suggest the Merseysiders are preparing to make an increased offer to the Hornets to secure the highly-rated Portuguese boss, as they seek a successor for Ronald Koeman.
Press Association Sport understands Silva is determined to leave, but is reluctant to resign.
Everton sacked Koeman in October, with David Unsworth having been placed in caretaker charge at Goodison Park.
Silva, who will take charge of Watford in Sunday's Premier League match at home to West Ham, said on Friday: "I don't know about an offer or not, or what's happened.