Aston Villa manager Dean Smith will investigate how news of Jack Grealish's injury emerged in the 24 hours before their 2-1 loss to Leicester City.
Smith said it is not a long-term problem and hopes to have Grealish available soon, although it is understood he could be out for a month.
Villa's boss said the injury being made public "certainly" helped Leicester.
"I was made aware on social media there were rumours he was not going to play," said Smith.
"If that is coming out of our training ground I will find out where it is coming from and reprimand whoever it is coming from.