Mikel Arteta backs calls for temporary subs so head injuries can be assessed

Mikel Arteta wants concussion substitutes to be introduced (Andy Rain/PA)

Arsenal manager Mikel Arteta has backed calls for concussion substitutes to be introduced in football.

The Gunners boss saw defender David Luiz involved in a sickening clash of heads with Raul Jimenez on Sunday which left the Wolves striker with a fractured skull.