Arsenal managed to get over the line in their Champions League encounter with Shakhtar Donetsk on Tuesday night. In an uninspiring encounter at the Emirates Stadium, the Gunners took all three points thanks to a 29th-minute own goal from Dmytro Riznyk. Arsenal forward Gabriel Martinelli cut inside in the box and let rip with an effort that cannoned off the post and went in off the Shakhtar goalkeeper. Mikel Arteta’s charges didn’t manage to build on their goal, however, missing several chances including a 77th-minute penalty from Leandro Trossard. The £27million man gambled on the goalkeeper d…