Messages of support poured in for Alex Ferguson after the legendary former Manchester United manager was left fighting for his life following emergency surgery for a brain hemorrhage. News of his operation was made public by his old club, with a United statement cautiously optimistic about the prospects for the 76-year-old, the most successful manager in British football history. “Sir Alex Ferguson has undergone emergency surgery today for a brain hemorrhage,” the statement said. “The procedure has gone very well but he needs a period of intensive care to optimise his recovery. His family request privacy in this matter. “We will keep Sir Alex and his loved ones in our thoughts during this time, and we are united in our wish to see him make a comfortable, speedy recovery.” An ambulance was called to Scot’s home in Cheadle, near Manchester, in northwest England at 9:00 am (0800 GMT) on Saturday, reported the Daily Mail. Concerns for Ferguson’s health started to mount when it was announced his son, Darren, the manager of English third-tier club Doncaster, would miss his side’s match against Wigan because of “family reasons”. – ‘Keep fighting Boss’ – “It is tragic. I am going to find out how he is as soon as I possibly can,” said Everton manager Sam Allardyce, a longstanding friend of Ferguson’s, after his side’s 1-1 Premier League draw at home to Southampton. “Obviously I knew it was extremely serious when I knew his son Darren didn’t attend his own game,” the former England boss added. “I hope he has a full recovery.” Southampton manager Mark Hughes, a United striker during Ferguson’s early years at Old Trafford, said: “I only just got a little whisper earlier on. I was hoping it wasn’t true. I wish him all the best.” David Beckham was among several United players past and present who took to social media to offer their support to “the boss”. On Instagram, with a picture of him as a youngster alongside Ferguson, Beckham wrote: “Keep fighting Boss.. Sending prayers and love to Cathy and the whole family x @manchesterunited.” Real Madrid superstar Cristiano Ronaldo, signed by Ferguson as an 18-year-old in 2003, tweeted a picture with his former mentor. “My thoughts and prayers are with you, my dear friend. Be strong, Boss!” he said. Former United and England captain Wayne Rooney said on Twitter: “Get well soon Boss. Thoughts with all the family at this sad time. #AlexFerguson.”