Mauricio Pochettino says knee discomfort was the reason for Christopher Nkunku’s withdrawal from our 1-1 draw with Borussia Dortmund.

The attacker played just over 20 minutes at Soldier Field after picking up an early injury. Mykhailo Mudryk was his replacement and played well, but fans would have been fearing the worst when our summer signing went down clutching his leg.

Pochettino was able to confirm the issue and the extent of the problem when he spoke post-match.

'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.'

Perhaps the pitch was a factor in the injury but Mauricio was keen not to blame the conditions, and says he will take the responsibility for any risk involved.

'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.'