Chelsea head coach Mauricio Pochettino has revealed knee discomfort was the reason for Christopher Nkunku’s withdrawal from our 1-1 draw with Borussia Dortmund.

The attacker was replaced by Mykhailo Mudryk after playing just over 20 minutes against Borussia Dortmund.

“The doctors are checking him and I hope it is not a big issue. He fell in the action which was maybe a penalty and he feels something in his knee but we hope it is nothing big,” Pochettino confirmed.

“We hope he can be back quickly with the team. We need a few days to assess him.

“We took some risks because the pitch is not perfect because the facilities are used for a different sport. We won’t blame the pitch for the injury though. For me, it was bad luck.”