Pochettino confirms Nkunku injury as Chelsea draw with Dortmund

Mauricio Pochettino confirmed striker Christopher Nkunku suffered a knee injury in Chelsea's final pre-season friendly as they drew 1-1 with Borussia Dortmund.

Nkunku, a £52m addition from RB Leipzig this summer, had impressed with three goals during the club's tour of the USA but came off after just 20 minutes at Soldier Field.

The 25-year-old will need to be assessed further by the Chelsea medical staff and Pochettino was not prepared to blame the playing surface, which is usually used for NFL matches, for the setback.

"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," said Pochettino.

"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."