Arsenal full-back Sead Kolasinac is set to miss the beginning of the season, with the Gunners having reported that the Bosnia and Herzegovina international will likely watch 8-10 weeks of action pass him by as he treats a knee injury.
The player had limped off injured during the pre-season clash with Chelsea on Wednesday after a coming together with Blues wide man Victor Moses, and has since had scans done on his left knee.
An injury update provided by Arsenal on their official website states that the player will be sidelined between eight and ten weeks.
Welsh midfielder Aaron Ramsey also went off against the Gunners' London rivals with a calf issue in midweek.