WHAT a week it’s been for Gabriel (£5.2m). Not only did Arsenal’s No6 contribute to clean sheets against Fulham and Atletico Madrid, he exhibited his set-piece prowess to great effect in both fixtures. It was Gabriel who found Leandro Trossard (£4.2m) with a near-post flick from Bukayo Saka’s (£6.3m) corner for the Gunners’ winning goal…