Midfield groundwork's done, but will Arsenal sign a winger?published at 14:12 British Summer Time
Sami Mokbel
BBC Sport Senior football correspondent
Arsenal are also looking to sign a winger, with Athletic Bilbao's Nico Williams a genuine target.
The Spain international has a reported 58m euro (£49m) release clause, but his wages would make him one of the biggest earners at the club.
Borussia Dortmund's English winger Jamie Gittens has also been liked with the Gunners.
Much of the groundwork to strengthen the midfield has already been done. Martin Zubimendi is expected to join from Real Sociedad - a deal largely executed by former sporting director Edu and Jason Ayto, who took the role on an interim basis following his predecessor's departure in November.
Zubimendi, 26, will replace Jorginho, who is set to join Brazilian side Flamengo before the Club World Cup.
Whether Arsenal look to sign another midfielder will depend how contract talks develop with Thomas Partey.
The 31-year-old Ghana international seemed likely to leave at the end of his contract next month, but Andrea Berta's arrival has signalled a change of direction and Partey is being offered the opportunity to stay in north London.