According to the Scottish Sun, Everton sent a scout to watch Celtic defender Virgil van Dijk against Qarabag in the Champions League on Wednesday.
The Toffees have snapped up midfielder Tom Cleverley and winger Gerard Deulofeu this summer, but with The Guardian reporting that Chelsea are keen on defender John Stones, manager Roberto Martinez may need to bring in another centre back this summer.
Having released Antolin Alcaraz and Sylvain Distin, Martinez is on the lookout for a new defender - and Celtic star Van Dijk is at the top of his list of targets.
The 24-year-old Dutchman has been superb for Celtic ever since arriving from Groningen two years ago, and looks destined for a move to the Premier League in the near future.
Now, the Scottish Sun report that Everton boss Martinez sent one of his scouts to watch Van Dijk in action during Celtic's 1-0 win over Qarabag in the Champions League on Wednesday.
With a £10m bid allegedly in the pipeline, Van Dijk could be moving closer to a move to England, as Everton prepare their next move for the giant defender.
Replacing Stones wouldn't be easy for Everton, but in Van Dijk they would be getting an athletic defender with strength and speed, as well as superb technical ability to not only bring the ball out from the back but also contribute goals too.
Van Dijk would be available at a fraction of the cost of Stones' projected value, which would leave Martinez money left over to spend on other areas of his team - and whilst we have seen the likes of Jean-Alain Boumsong struggle to make the step up from Scottish football to the Premier League, Van Dijk looks to have all the attributes to become a success; if Everton can strike a deal with the Bhoys.