Ryan Mason has revealed he had "no option" but to retire following the head injury he sustained at Chelsea in January 2017.
Hull City midfielder Mason announced his retirement on Tuesday, having been advised that a return to competitive action would be against his best interests.
The 26-year-old fractured his skull in a clash of heads with Gary Cahill at Stamford Bridge, requiring surgery, and previously claimed that he felt "lucky to be alive" after the incident.
"I can confirm that following specialist medical advice I am having to retire from playing professional football," Mason said in a statement.
"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 fiance, 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."
Mason is a product of the Tottenham youth system and won his only England cap against Italy in March 2015 before departing for Hull in the August of the following year.
"I am so proud to have come through the ranks to play for my club, the club I love," he added. "To have had the honour of captaining the team fills me with immense pride.
"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 love the game, I always will and I am excited to see where football will take me next."
|Chelsea v Manchester United: Hazard better under Sarri than he ever was with Mourinho|
|The big Friday Premier League quiz|
|Khawaja suffers mensical tear, doubt for India series|
|Babbel: Klopp must win trophies now at Liverpool|
|LeBron makes spectacular start on Lakers debut, but LA fall to Trail Blazers|
|Broncos thrash Cardinals to end losing streak|
|Price leads Red Sox past Astros and into World Series|
|LeBron makes fast start on Lakers debut with two massive dunks|
|Real Salt Lake 4 New England Revolution 1: Hosts boost play-off chances|
|Simmons gets triple-double in win over Bulls|
|´Ambitious´ Maguire wants Champions League football|
|Henry praises ´charismatic leader´ Falcao|
|WATCH: Cardinals WR Fitzgerald tackles former QB Warner on sidelines|
|Spurs right not to make signings – Pochettino|
|Icardi happy at Inter, close to contract renewal|
|This Week in U.S. Sports: Bosa leaves Ohio State while the World Series is almost set|
|Liverpool boost as Salah and Van Dijk join training|
|Cowboys discuss road woes, Prescott says team ´addressed the elephant in the room´|
|Isner scrapes through in Stockholm, Monfils eliminates Tsonga|
|Hinch says Altuve would be out with injury in regular season|
|WATCH: Schwarzenegger tells LeBron to make Lakers great again|
|LeBron tells Lakers coach Walton: I´m always fresh!|
|Mayweather should come back to fight me - Alvarez|
|Goerges battles past Vekic, Kasatkina wins all-Russian tie|
|Ask 32,000 Gibraltarians if the Nations League is meaningless - Styche|
|They´re going to speak about it for years - Azhar reflects on comical run out|
|Garcia in the mix as weather hits Andalucia Valderrama Masters|
|From lacking a ´football brain´ to signing a new contract – the Mourinho-Shaw saga|
|Alonso teases Indy 500 return as Hamilton reveals NASCAR temptation|
|Guptill ruled out of Black Caps´ UAE tour|
|UEFA investigating PSG-Red Star fan clashes|
|Just ´another weekend´ for champion-elect Hamilton|
|G League will offer $125K to top prospects in lieu of NCAA one-and-done route|
|Chargers defensive end Bosa ´a few weeks´ away from return, says father|
|Bale back in full Real Madrid training|
|Roma supporter found not guilty of inflicting GBH on Liverpool fan Sean Cox|
|´Fantastic´ Neuer will prove he´s still the best, says Lloris|
|Perez secures Force India stay|
|Australia wait on Khawaja scan|
|Shaw signs Manchester United extension|
|Jones lays down challenge to snubbed England star Cipriani|
|West Ham´s Pellegrini rejects Dzeko speculation|
|Emery fails to assure Ramsey of Arsenal future|
|Pakistan on course for victory after Babar 99 and farcical run out|
|Canelo ready to leave comfort zone to face Fielding|
|Eriksen ready for Tottenham return, Pochettino confirms|
|Titans coach rocked by Hurrell´s Rhinos switch|
|Rubin Kazan suspended from UEFA competition for FFP breach|
|Real Madrid could sack Lopetegui if results don´t improve, says Essien|
|On-court coaching would add to drama - Mouratoglou|
|Babbel lauds ´top class´ Ronaldo after Juventus switch|
|Carmelo Anthony: Rockets bench role challenging mentally|
|Maqsood preferred to Amir in Pakistan T20 squad|
|Make Ramsey Arsenal captain, don´t let him leave – Wilshere|
|Kaneria admits guilt in spot-fixing case|
|No coach can work miracles – Ibrahimovic defends under-fire Mourinho|
|Morgan earns England recall, Cipriani overlooked|
|Reavie leads CJ Cup, solid start from Koepka|
|Juventus kicked me out to sign Ronaldo – Higuain|
|England forward Hughes given six-week ban|
|Injured Halep withdraws from WTA Finals|
|Ronaldo exit makes all the difference for Real Madrid – Luxemburgo|
|Manchester United´s Chelsea Blues and other one-sided rivalries|
|Babbel fears for Kovac´s Bayern future|
|Bradley homers again, Red Sox take 3-1 lead over Astros|
|Ayton, Doncic shine on NBA debuts|
|Leonard focusing on future after Raptors debut|
|MLS Review: Rooney stunner seals DC win, Sounders clinch play-off spot|
|Pochettino ´proud´ of Dier for Ramos tackle|
|Wallabies name three uncapped players for All Blacks clash|