Hull City have launched an investigation into a video allegedly showing captain Lewie Coyle in an "incident" in the city centre.
The video, which was shared on social media, was taken on Sunday.
Full-back Coyle, 29, made 46 appearances in all competitions this season and played 90 minutes as the Tigers avoided relegation to League One with a 1-1 draw at Portsmouth on the final day of the campaign on Saturday.
The club said in a statement they would "refrain from making any further comment until the investigation has been concluded".
Coyle started his career with Leeds United and has played 308 times in the Football League.