Former team-mates and other players wished the 24-year-old luck in the future, while Owen & Barton plan to link-up, Riise's ready to make history and Neville is optimistic on youth
The 24-year-old released a statement on Bolton Wanderers' official website, with manager Owen Coyle and chairman Phil Gartside also adding supportive comments. As the news filtered out around the football community, the tributes poured in on social networking site Twitter.
Meanwhile, Joey Barton and Michael Owen plan a joint venture in the blogging world, while Phil Neville is impressed my Everton's youth prospects and John Arne Riise looks forward to a historic night, it's all here in Word on the Tweet...
"Very sad to hear that Fabrice Muamba has to retire from football. I really wish the best for him. Top lad! #keepstrong"
Former Arsenal team-mate Cesc Fabregas leads the way with this tribute to the former midfielder.
"Gutted my friend @fmuamba has retired from football. Such a great player and even better person. good luck bro
"One thing I no about @fmuamba is whatever he chooses to do next he will be the best at it! #Driven #Talented"
Norwich City forward James Vaughan praised Muamba, and is sure that his friend will be successful in life.
"Fabrice Muamba retires from the beautiful game. Good luck to@FMuamba for his future endeavours. #SuchAGreatGuy!"
Arsenal youngster, currently on loan at Bolton, Benik Afobe sent his best wishes to the former Gunner for whatever he choses to do next.
"Sometimes things in life show you that there are more important things than football. Wishing @fmuamba and family a prosperous future!"
Wayne Routledge reflects on life outside of the game after the news, also showing support for Muamba.
"Devo to hear the news tht my boy @fmuamba has to retire from football. What a player he was, Fab Im just happy u are still with us #legend"
Another ex team-mate Justin Hoyte mirrors Muamba's own view that his health is the most important thing.
"Trained hard with the reserves again today-we have a great crop of young players coming thru the best since I've been at the club-good sign!"
Everton captain Phil Neville reveals that the club have a bright future ahead, after being put through his paces by the reserves.
"Big game tonight, 104th cap, meaning most capped player in Norwegian history, thanks a million to team mates, managers and fans #biglove"
Norway host Greece on Wednesday evening with John Arne Riise in line to make history, he says thanks to all that have made it possible.
"@Joey7Barton I'm debating the blog idea mate! Got a couple of topics I'd like to talk about for starters!"
Michael Owen is thinking of ways to occupy himself while searching for a new club.
"@themichaelowen cool lets get together and brainstorm it then. You give me some finishing advice, I'll give you some blogging advice."
While Joey Barton is keen on the idea of trading secrets.