The summer transfer window is officially closed, and Arsenal should be fairly happy with the business they have done. The Gunners had five key positions that needed strengthening when they entered the window back in June – backup goalkeeper, left-back, central midfielder, winger and striker. Arsenal have addressed four of those issues with the signings of Neto, Riccardo Calafiori, Mikel Merino and Raheem Sterling, which makes this a solid window. However, Edu Gaspar and Mikel Arteta know that there is more work to be done in 2025, and these are the three future signings we think they should st…