Arsenal forward Kai Havertz has sustained a knee injury that will keep him out for an unspecified period, according to reports citing club sources on 20 August. Team medical staff are assessing the extent of the damage, but early indications suggest a significant spell on the sidelines at the start of the Premier League campaign. Manager Mikel Arteta is evaluating options in the transfer market to cover the Germany international’s absence, with the club said to be considering the acquisition of an additional attacker before the window closes.