Edwin van der Sar sees shades of Cristiano Ronaldo's mental strength in 20-year-old Juventus centre-back Matthijs de Ligt.
Former Manchester United, Juve and Ajax stopper Van der Sar spoke to ESPN FC's Shaka Hislop (h/t Ollie Lewis of MailOnline) about De Ligt's early struggles in Turin and how he compares to team-mate Ronaldo:
"He had been all his life at Ajax. So to step away, move with your girlfriend and the family to a different city, a different language. But his mentality and the way he wants to improve, he wants to be the best defender in the world.