Arsenal goalkeeper Petr Cech sent a beautiful tweet to Ryan Mason on Wednesday morning following official confirmation of the midfielder's retirement.The 26-year-old Hull City star - who came through the academy at Tottenham - suffered a serious head injury 13 months ago and was forced to retire this week after failing to make a full recovery.Mauricio Pochettino shared a heart-warming message for Mason following Tottenham's 2-2 draw away at Juventus in the Champions League.“It is very sad news,” Pochettino said. “But at the same time, he opens a massive door for his future with his family, with George, his new boy. He is 26, but he is an amazing person and a football brain. He was a very successful player, and he will be a very successful person with everything he wants to do.“For me, he will always be a special player. And of course the door is always open to help him. Myself, us the coaching staff, and the club. Because we love him, and we love [partner] Rachel, George and all his family."Don’t worry, Ryan: you are going to be a successful person outside of the pitch.”

Petr Cech's amazing gesture on Twitter

The Arsenal goalkeeper suffered a serious head injury in 2006 whilst playing for Chelsea - and he's been helping Mason during his recovery.

“I can’t speak highly enough of Petr Cech. He’s set the standards of what it is to be a proper man and a gentleman," said Mason in October.

The 35-year-old Czech international has been round to Mason's house to reassure him on numerous occasions and took to Twitter to share a touching message on Wednesday morning.

Cech tweeted: "Yesterday was a sad day for one incredible young man. @RyanMason. Although his story didn’t finish with ultimate happy ending, his determination, attitude and bravery he’s shown during his recovery is something to be admired and an inspiration for others! All the best Ryan."

That's pure class.

Mason thanked Cech on Twitter.

Fans applauded the Arsenal 'keeper for his kind gesture.