Chelsea defender David Luiz is carrying a serious knee injury this season.

The Sun says his sore knee needs micro-managing for the rest of the season.

The Chelsea defender is still having treatment on his battered right knee nearly THREE MONTHS after Sergio Aguero's red-card lunge crocked him.

Luiz, 29, is set to return for tomorrow's league clash with Swansea, having been rested for the 2-0 FA Cup win at Wolves.

But club medics are monitoring his nagging injury game by game and reckon the damage will only fully heal in the summer with lengthy rest.

Antonio Conte has called Luiz a 'warrior' for playing through the pain.