Media playback is not supported on this device 'Suddenly there was a blackout' - Craigan recalls head knockThe co-author of research into dementia in football says he is "hopeful" the sport will bring in rugby-style temporary substitutions for concussion. Glasgow University research found ex- footballers were three and a half times more likely to die of dementia. Dr John MacLean, Scottish FA chief medical consultant, also urged steps to reduce "heading load on young players". MacLean is part of the Uefa medical committee which has put forward the temporary substitutions proposal. "Through work with the Scottish FA and Uefa, what we have started to do is put together some sensible guidelines.

Source: BBC October 22, 2019 10:00 UTC