The 26-year-old was involved in a collision with Chelsea defender Gary Cahill in January 2017 which has kept him out of action ever since. Mason, who has one England cap, said in a statement: “I can confirm that following specialist medical advice I am having to retire from playing professional football. 🔶◾️ | It is with deep regret that the Club has to announce, following the head injury suffered on 22nd January 2017, @RyanMason is to retire from football with immediate effect ➡️ https://t.co/ccKiMlH6ZK pic.twitter.com/uNQ6mALO35 — Hull City (@HullCity) February 13, 2018“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.”

Source: Irish Independent February 13, 2018 11:03 UTC