Hull City boss Steve Bruce admits his squad risks being hit by a flu bug.
A handful of players and a couple of Bruce's backroom team contracted the illness in recent days.
"We're going to give everybody a couple of days off away from the training ground," said Bruce.
"We sincerely hope it won't be a problem for us going forward but we have five or six struggling with it at the minute - a couple of staff and three or four players, including Koren, Alex and Brady who are away home and didn't travel with the lads.
"We have to be a bit careful in a confined area like the training ground so we'll stay away.
"We've had a gruelling schedule and we just hope it's not so bad that it sweeps ahead of everyone. I had something similar about two weeks ago and there's no way you could play with that. Let's hope it's not that bad."
