Nottingham Forest striker Taiwo Awoniyi was rushed to hospital for emergency surgery on an abominal injury he sustained during the 2-2 draw with Leicester.
Awoniyi, 27, collided with the post in the final minutes at the City Ground on Sunday and tried to carry on after receiving several minutes of treatment.
The full extent of the injury was only discovered by club medical staff on Monday and the Nigeria international was hospitalised for an urgent procedure.
Awoniyi had stretched to try and meet Anthony Elanga's cross and was in visible discomfort after sliding into the foot of the post, an incident which led to a on-pitch discussion between Forest owner Evangelos Marinakis and Nuno Espirito Santo.