Oleksandr Zinchenko's arrival to Arsenal from Manchester City has allowed them to resume their transfer window after missing out on players like Raphinha and Lisandro Martinez.
The Gunners have been interested in the Ukraine international for the most of the summer because Zinchenko can improve the team's quality and adaptability.
Zinchenko was reportedly acquired by Arsenal for an initial sum of £30 million ($36 million), with add-on payments of up to £2 million ($2.4 million) possible if specific goals are achieved.
With Arsenal, the 25-year-old has agreed to a four-year contract that will keep him in north London through the summer of 2026.
Pep Guardiola has been anxious to make the most of Zinchenko's spirited manner and talent in possession, so he has spent the majority of his time at City covering at left-back.
Kieran Tierney's history of injuries makes it likely that Zinchenko will have to step in there at some point during the course of his Arsenal career, but the central midfielder was his primary position of focus when he was bought.
Zinchenko is a play-making No. 8 for Ukraine, and Arsenal will aim to use him most in this capacity as they try to give players like Bukayo Saka, Gabriel Martinelli, and Zinchenko's teammate from City, Gabriel Jesus, more opportunities.