Newcastle boss Eddie Howe admits they have injury concerns for Dan Burn.
Burn suffered a back intjury during victory over Arsenal and is now a doubt for the Champions League clash with Borussia Dortmund.
Howe said, "He landed on his back going up for a header, and he has back pain. I think he's potentially worried about it.
"We'll wait and see, but I don't think it's the kind of normal thing where you wake up the next day and it's gone.
"It could be more serious than that."