Brentford shot stopper David Raya has joined Arsenal on a season-long loan.

The keeper has also signed a 12-month extension with the Bees to his contract.

The move allows Raya a season to try and establish himself as the top keeper at Arsenal, while Brentford can still receive a fee for him next summer.

"I'm sure the first question that all Brentford fans will ask is why this transfer has been structured as an initial loan with Arsenal having the option to make it permanent in the future," said Brentford director of football Phil Giles.

“The answer to that is simply that it enables this deal to be done more rapidly between both clubs, with all parties wanting to make this a permanent transfer as soon as practically possible, whenever that might be.

“David's contract extension is a fall-back position in the event that the transfer is not made permanent. I'm not expecting to see David back at Brentford, although if ever that happened then of course the opportunity to work with such a high-class goalkeeper for up to two more years would in many ways be an unexpected bonus for us.

“David has been a magnificent goalkeeper for us. He thoroughly deserves his move to a Champions League club and the next step in his career. In our view he is one of the best goalkeepers in the Premier League and will show himself to be one of the best in the world in the next few seasons.

“On top of that, he is a fantastic human being, and his conduct around the training ground these last few weeks has been, given the uncertainty around his future, absolutely exemplary. We wish him nothing but good luck."