Hull midfielder Ryan Mason was taken to hospital following a clash of heads during the first half of Sunday's Premier League fixture at Chelsea.
The 25-year-old former Tottenham player and Chelsea's Gary Cahill collided in Hull's box after 14 minutes of the Tigers' 2-0 loss at Stamford Bridge.
Hull boss Marco Silva was awaiting an update on the player's status.
"Ryan Mason at this moment is staying in the hospital. I don't know more news about this,'' Silva said.
"I hope nothing special, nothing serious, but at this moment the player stays in hospital.
