Tempers will have flared at times as Arsenal tasted defeat for the first time this season against Bournemouth on Saturday evening. Arsenal were beaten 2-0 on the south coast in this Premier League encounter, in a match that Mikel Arteta’s side handled poorly from start to finish. The Gunners started badly, and were reduced to ten men on the half-hour mark. William Saliba was sent off for denying a goalscoring opportunity. Whilst the Frenchman was guilty of committing a clear foul, the Gunners may feel somewhat aggrieved that he was given his marching orders, too. After all, referee Robert Jone…