Jan Vertonghen injury shows need to change concussion protocol

Tottenham defender Jan Vertonghen suffered a medical scare against Ajax, which forced the defender to sub himself out after experiencing delayed effects from an injury to his head. SI's Luis Miguel Echegaray joins SI Now to deliver three changes he feels soccer needs to make to its concussion protocol.

Tottenham defender Jan Vertonghen suffered a medical scare against Ajax, which forced the defender to sub himself out after experiencing delayed effects from an injury to his head. SI's Luis Miguel Echegaray joins SI Now to deliver three changes he feels soccer needs to make to its concussion protocol.