Sevilla coach Unai Emery is keen to hear back from Everton.
The Daily Star Sunday says it is understood it would cost around £3m to activate the escape clause in his contract with Sevilla.
Emery, who won the Europa League three years in a row with the Spanish club, is in no hurry to make a decision about his future.
AC Milan are also believed to be interested in the 44-year-old, and he was also linked with Real Madrid earlier this week.
Emery¹s camp have held talks with Everton and he has made a series of demands to see if they can match his ambition.