Ben Gibson will depart Middlesbrough if the club are relegated from the Premier League.
Sky Sports is of the belief that the 24-year-old defender is set to exit the Riverside Stadium if Boro are unable to preserve their top flight status this season.
The news is sure to have the likes of Chelsea, Manchester City, Liverpool and Tottenham Hotspur on alert.
Gibson is valued at £25million and is expected to be the subject of strong interest from the aforementioned clubs this summer.