Preston's young left-back Josh Earl is attracting Premier League interest.
The Sun says Everton are checking on Earl as they look for Leighton Baines' long-term replacement.
Top spy Steve Walsh watched Earl against Brentford last week.
However, the chase has been slowed down a bit after the 6ft 5in prospect damaged knee ligaments in the following game against Aston Villa.
Everton are still actively working the transfer market, despite their managerial search.