The Arsenal board are happy to sanction a £25m deal for Besiktas star Domagoj Vida provided the Gunners can shift Shkodran Mustafi or Danny Welbeck in the coming days.
The defender was impressive as Croatia reached the final of the World Cup in Russia and his performances have not gone unnoticed by Arsenals head of recruitment Sven Mislintat.
Arsenal already have a wealth of options at centre-back but Emery wants a long-term partner for Sokratis Papastathopoulos and Laurent Koscielny is currently sidelined with an achilles injury.
Mustafi has failed to convince Emery in pre-season and the Gunners are open to offers for the German before the transfer window closes.
Danny Welbeck has less than a year left on his deal and has been told he can leave, with Everton interested.
One or both of their departures would free up funds for Emery to make moves in the transfer market and the Sun say he will use the money to go for Vida.
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The 29-year-old only joined Besiktas last January for £8m but the Turkish giants would not stand in his way for the right fee.
Arsenal kick off their Premier League campaign with a clash against champions Manchester City and will be without Sead Kolasinac after he was ruled out for a minimum of eight weeks.