Quote: leedsnsouths "Haaland played again for man city, but Roy Keane clearly ended his career'"
But Flower didn't "clearly" end Hohaia's. If you'd care to read up on this type of injury you'd know that it is almost exclusively caused by multiple smaller impacts usually over a protracted period. As in the case of Hohaia, for example, who suffered many concussive injuries throughout his career.
There's a lot of research and data on this if you'd care to check it out as opposed to regurgitating something you heard in a pub.