Dinos Mavropanos admits he wanted to return to Stuttgart after spending last season on loan at the German outfit.
Arsenal obliged by agreeing a new loan on Thursday and have included an option to buy for £3m.
"It was a great wish of mine to continue my career at VfB. This has come true. Many thanks to the VfB family for the trust they have placed in me," he told the Stuttgart website.
"Special thanks go to Sven Mislintat and Pellegrino Matarazzo, both fantastic people who support me on my way with great professionalism.
"I want to use my full potential to best meet our team's goals. For the future, I hope that we all stay healthy and that our fans can support each other in the stadium again.
"That is something that I miss a lot and I can hardly wait to experience the special atmosphere in the Mercedes-Benz Arena again."