Arsenal have informed Crystal Palace of their asking price for Calum Chambers.
The Daily Mail says Palace have re-opened talks with Arsenal over an improved offer for Calum Chambers.
The Eagles bid £16million for the defender last week but the offer was rebuffed.
Palace are determined to land Chambers, however, and have entered into a second round of talks with a view to getting a deal over the line.
Arsenal value Chambers at £20 million, a fee that would see the Gunners make a £4m profit on player they signed from Southampton in 2014.