Cardiff City know they face a battle to keep hold of Josh Murphy.
The Sun says the winger, 24, has attracted interest from top-flight rivals Burnley and Crystal Palace.
Murphy arrived last summer for £11million from Norwich and has played 28 times this season.
Cardiff could get their money back in the summer after Murphy adapted well to his first full Prem term.
Neil Warnock's side are favourites to go down with Fulham and Huddersfield as they are four points below safety with just two games to play.