The Toffees boss has assured fans that the highly sought after defender was not seriously injured during Tuesday's victory.
Everton manager Roberto Martinez has moved to calm fears surrounding John Stones, after the defender was replaced during their 2-1 League Cup win over Reading on Tuesday.
The defender appeared to be in some discomfort as he limped off early in the second half, but Martinez insists it is nothing serious.
"John was withdrawn as a precaution more than anything. He had a knock in his knee and we couldn't take any risks," the Spanish coach said.