An early good evening and welcome to Eurosport's coverage of Chelsea's Champions League clash at Rennes. I'm Ciaran Baynes and I'll be following this early kick-off match with you.

What an end to the game. You feel for Rennes but what a performer Giroud has been in his career coming off the bench. Frank Lampard will really not want to let him go in the January transfer window.

GOAL! Superb poachers goal from Olivier Giroud. Werner should have scored after Ziyech drew the defenders and put him through on goal but his tame effort was saved by Gomis' feet, only for the ball to fly in the air enabling the French centre forward to power the rebound home.

Ziyech put in fine free kick from the right flank which finds Chilwell on the back post but he can only meet it with a weak header which is easily gathered.

GOAL FOR RENNES! Guirassy fires a header home from Bourigeard's corner.

Camavinga is replaced by Grenier. Not his best game tonight but his time will come.

Ziyech and Havertz come on Hudson-Odoi and Kovacic.

Mendy with a superb stop after Nyamsi met a corner with a firm header and just as impressively scooped the rebound with a foot into his arms.

Chelsea lost the ball in their own half and Rennes broke quickly, with Castillo firing a ball across the penalty area which Guirassy got under control and looked to fire cleverly into the near post with the outside of his boot but Mendy pushed wide.

Kante replaces Mount and Giroud comes on for Abraham. Two French internationals getting a run out on home soil.

Abraham goes down under a challenge from Nyamsi in the box but a foul is given against him. The England striker had a bit of a hold of the defenders shirt which seems to be the reason.

Rea Siliki comes off for Del Castillo.

Krasnadar have equalised against Sevilla, so Chelsea will have to hold on to secure qualification tonight.

Abraham really does put a shift in, on two occasions making crucial blocks in his own box as Rennes have consecutive corners.

Traore isn't far away there, a good left-footed effort aimed inside the near post but Thiago Silva with his hands behind his back puts his torso in the way and averts danger.

Five hours since Rennes have scored a goal. For all their good play they could really do with a finisher.

DISALLOWED GOAL! Azpilicueta puts in a cross to the back post that Werner heads home but he was just offside.

Rennes get the second half underway...

Chelsea dominated early but Rennes showed a lot of quality in the closing stages and can consider themselves unlucky to be behind.

Bourigeaud takes the free kick but Azpilicueta jumps in the wall and deflects it wide of the goal.

Guirassy is brought down on the edge of the D by Thiago Silva. A last chance before the break to get a deserved equaliser.