Ryan Mason has been forced to retire from football on medical advice, due to the injuries he suffered in a clash of heads against Chelsea 13 months ago.
Hull City midfielder Mason revealed on Tuesday that after seeking medical advice, he has "no option" other than to retire.
Mason, 26, suffered a fractured skull in an accidental clash with Gary Cahill on January 22, 2017.
The one-cap England midfielder has since been fighting to make a return to the game, but after consultations with specialists, has now elected to retire due to the potential risks of a return.
Mason, who became a father last year, confirmed his decision on Tuesday morning.
"I can confirm that following specialist medical advice I am having to retire from playing professional football," declared Enfield-born Mason.
"I have worked tirelessly in order to be able to return to the pitch. Unfortunately, having taken expert medical advice I now have no option but to retire due to the risks involved given the nature of my injury.
"I am and always will be eternally grateful for the incredible network of people around me who have helped me to recover from what was a life-threatening injury in January 2017.
"Thank you to my amazing fiancé, Rachel, who has been by my side and lived every single day with me since the injury, helping to give me the strength I’ve needed no matter how tough things got. We are so lucky to have now become the proud parents of our perfect baby boy George.
"To my Mum, Dad, sisters, and all of my family and close friends, thank you for everything. Despite how tough it’s been and the challenges I’ve faced along the way you’ve all been there supporting me and words will never truly do justice to how grateful I am for your love and support.
"I would like to thank everyone at Hull City, especially The Doc Mark Waller and all of the medical team for helping me to recover. Thank you to the Chairman and the board for being so patient with my recovery and sticking by me.
"There are too many names to mention when it comes to talking about Tottenham Hotspur but I would like to say a special thank you to John McDermott, the Gaffer and everybody at Spurs for helping me to achieve my dreams.
"I am so proud to have come through the ranks to play for my club, the club I love. To have had the honour of captaining the team fills me with immense pride. Thank you to all of my teammates over the years, there are too many to mention, it’s been a privilege to play alongside you all.
"Finally, representing my country is an honour that nobody can ever take away from me and something that I am so proud to have achieved.
"I’m retiring from the game with my head held high having done everything in my power over these past 13 months to have given myself every opportunity to return to the pitch.
"I feel content knowing that I dedicated my life to be able to play football at the highest level, hard work really does pay off!
"I love the game, I always will and I am excited to see where football will take me next."
Mason came through the ranks at Tottenham, making 70 appearances for the club and scoring four goals, before joining Hull for a club record £13million in 2016.
He made 20 appearances for the Tigers, scoring twice.
Mason made one appearance for England, playing 16 minutes in the 2015 friendly against Italy in Turin.
He also spent spells on loan at Yeovil, Doncaster, Millwall, French side Lorient and Swindon Town, before his switch to East Yorkshire.
A statement released by Hull City said: "It is with deep regret that the Club has to announce that, following the head injury suffered on 22nd January 2017, Ryan Mason is to retire from football with immediate effect.
"Ryan has sought the guidance of numerous world renowned neurologists and neuro surgeons who have all advised that a return to competitive football is not advised.
"Ryan would like to put on record his thanks to all at the Club who have aided his recovery to this point and he his is indebted to them for their support and compassion over the past 12 months."