According to a report in the Daily Mirror, Brentford want £1 million for midfielder Toumani Diagouraga.
Rangers have made Diagouraga one of their top targets in January, and have been tracking the midfielder since the window opened.
Light Blues boss, Mark Warburton, linked up with the 28-year-old during his time at Griffin Park, and he believes that the former Peterborough United man could increase the quality of his squad at Ibrox.
Diagouraga is understood to be very keen on a move to Scotland, but Brentford are determined not to lose him on the cheap.
Diagouraga has been an important player for the Bees over a number of years, and he has been a regular in their first team this season.
The rangy midfielder still has 18 months left on his contract, meaning Brentford will only listen to offers in excess of £1 million.
If Diagouraga does join Rangers, he will become the third player Mark Warburton’s side have signed in January, after Rangers also completed deals for Accrington Stanley duo Josh Windass and Matt Crooks.