Brentford face a battle to keep hold of fullback Aaron Hickey.
The Mirror says Liverpool, Arsenal and Manchester United are all watching the Scotland international.
Hickey has impressed scouts at Brentford after being lured from Bologna where he spent two seasons.
The defender has made great progress under manager Thomas Frank and attracted enquiries from Manchester City last season.
At the time, Frank said: "We will not sell him. He's not even been here a year, with all due respect. I think he's a very good young player that I think has a fantastic future ahead of him.
"There needs to be a little bit more to get into the City team in terms of performances. I think he's done well and I really like him. I think he can get up there."