Everton's Jarrad Branthwaite is among the defenders being monitored by Real Madrid ahead of the summer transfer window.
The England international, who was given his Everton debut by Los Blancos boss Carlo Ancelotti, has continued to develop under David Moyes and was a stand-out performer for the Toffees during their enthralling derby duel with Premier League leaders Liverpool last week.
Real want to freshen up their defence with Antonio Rudiger, David Alaba and Eder Militao showing signs of wear and tear.
They have drawn up a list which includes left-sided centre back Branthwaite, Liverpool's Ibrahima Konate and Bournemouth's Dean Huijsen who has a £50million release clause.