Arsenal signed four players in the summer transfer window in what turned out to be an eventful few months for Mikel Arteta. Riccardo Calafiori’s early arrival was followed by Mikel Merino’s signing from Real Sociedad in August. However, the Gunners had to wait until deadline day for further incomings as Neto and Raheem Sterling joined the club on surprise loan deals. On the other hand, Arteta and co also missed out on a handful of players this summer. Benjamin Sesko opted to remain at RB Leipzig at least for another season, while Arsenal didn’t manage to agree a fee for Joan Garcia in the dyin…