Chelsea could enter the transfer market for a new left wing-back following the injury setback for Ben Chilwell.
The England international picked up an anterior cruciate knee ligament injury against Juventus last month.
The Blues decided that he would not require a surgery, but the decision has not proved worthwhile for them.
Chilwell has not made much progress over the past few weeks, and he will now undergo a surgical procedure.
He has been heavily linked since his fall-out with manager Rafa Benitez. The Toffees could sell him next month.
The Frenchman is reportedly valued at around £25m. He could become a regular starter if he joins the Blues.
Marcos Alonso has been the regular left wing-back choice in Chilwell’s absence, but he is prone to errors.
The Spaniard is one of the best attacking full-backs, but has been vulnerable when it comes to defensive duties.