Arsenal head coach Mikel Arteta has admitted his team need to "eradicate" the ill discipline that has seen them pick up three red cards this season.

Breaking down the moment the French defender was dismissed for a professional foul — and what was said about it

Arsenal received their third red card in just eight games when William Saliba was given his marching orders in Saturday's 2-0 defeat to Bournemouth.The Frenchman was initially shown a yellow card