Upon arriving Arsenal ahead of the new season as new boss, manager Unai Emery went about planning some necessary squad changes.
The Gunners eventually brought five players in during the summer transfer window, missing out on some of their targets.
However, the 27-year-old remained at Bayern Munich where he is now into the final months of a two-year loan.
The north London outfit missed out on such a huge player but have been handed a massive boost as he is now potentially available.