![Football is Heading for Trouble Over Brain Injuries Caused by the Ball](https://eng-archive.aawsat.com/wp-content/uploads/2017/10/3349.jpg)
Media ID: 55384646
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Caption:
Kevin Doyle (right) clashes with Iceland’s Sverrir Ingi Ingason during a friendly in March 2017. The Republic of Ireland striker has had to retire. Photograph: Brian Lawless/PA
![Football is Heading for Trouble Over Brain Injuries Caused by the Ball](https://eng-archive.aawsat.com/wp-content/uploads/2017/10/3349.jpg)
Kevin Doyle (right) clashes with Iceland’s Sverrir Ingi Ingason during a friendly in March 2017. The Republic of Ireland striker has had to retire. Photograph: Brian Lawless/PA