Football: Jimenez-Luiz clash raises calls for concussion substitutes in Premier League

December 01, 2020 9:54 AMLONDON (REUTERS, AFP) - A sickening clash of heads between Wolverhampton Wanderers' Raul Jimenez and Arsenal defender David Luiz which left the Mexican striker with a fractured skull has prompted calls for football clubs to be able to make "concussion substitutions".