Arsenal manager Mikel Arteta reflected on the injuries suffered by 'Gunners' defender David Luiz and Wolverhampton Wanderers striker Raul Jimenez after the pair clashed heads during Wolves' 2-1 win at Emirates Stadium on Sunday. Jimenez was given oxygen on the pitch and then taken to hospital following the collision, where he is reportedly conscious and responding to treatment, while Luiz played on until half-time when he was substituted. A fourth defeat in their last seven league matches means Arsenal have made their worst start to a season since the English Premier League's inception in 1992. Asked if he fears the sack with Arsenal on 13 points after ten games, Arteta said he knew on the day he signed his contract he would leave the club one day, but he is only concerned with improving his players.