The Arsenal coach is rumoured to be eyeing up a potential deal for the Costa Rica international in January window.

The report claims that Emery is not convinced by summer recruit Bernd Leno, with the German’s late mistake away to Southampton the previous Sunday leading to a 3-2 defeat.

Keylor is suffering a frustrating time of things at Los Blancos, with Belgian star Thibaut Courtois now the undisputed first-choice shot-stopper.

The 32-year-old goalkeeper is valued at around €14 million (£12.6 million) and Gunners could make a surprise swoop. Whether or not the board meet Unai’s request remains to be seen, but it would be a blow for Bernd.