Arsenal boss Mikel Arteta. Not only does the Spaniard need to turn around the Gunners' wretched recent form, he'll have to do it without one of the Gunners' best players this season - Kieran Tierney.Tierney was forced off against Liverpool with a knee injury, and although the exact length of his absence remains unknown, the Gunners will be without their all-action left-back for a significant period.Three months ago that wouldn't have been problem for Arteta, with Ainsley Maitland-Niles and Sead Kolasinac still Arsenal players.But with Kolasinac now at Schalke and Maitland-Niles on loan at West Brom, suddenly the Gunners have a big issue at left-back.Daily Star Sport have identified several solutions open to Arteta as he attempts to solve.
Read more on dailystar.co.uk