Arsenal are likely to be busy on the transfer front in the coming weeks as Edu and Mikel Arteta look to improve their squad. The Gunners did well last season, challenging for the Premier League title right until to the final day, but they’re not quite the finished article just yet. Arsenal won’t just be focusing on incomings, however. They’ll need to sell players to free up wages and squad spaces, and to stay on the right side of profit and sustainability rules. Although some players appear surplus to requirements and wouldn’t surprise anyone by leaving, other transfer decisions may prove a bi…