Former Everton boss David Moyes is delighted with the emergence of John Stones.
Stones, 21, has become one of Europe's most sought-after centre-backs thanks to a string of impressive displays for the Toffees.
"As soon as we took him, you could see John had a natural ability on the ball," Moyes told talkSPORT.
“He was nearly uncoached to be comfortable on the ball. It wasn't something that had been taught, it was all natural.
“I've got to say Roberto has done a great job in bringing him on and developing him.
"He's looking a really good player."