Arsenal have decided to accept a bid from Portuguese side Sporting Lisbon for striker Lucas Perez after he failed to win over Unai Emery, according to reports. The 29-year-old joined the Gunners two years ago in a £17m deal, but spent last season on loan at Deportivo after being deemed surplus to requirements by former manager Arsene Wenger. Emery’s arrival appeared to offer Perez a second chance at the Emirates, with the Spanish boss even having tried to sign his compatriot while in charge of PSG.

Perez reported to training early in an attempt to impress the new manager and was part of the squad that travelled to Singapore for their pre-season tour. However, Portuguese newspaper A Bola report that Sporting have agreed a fee of just £4.4million with Arsenal for Perez – a significant loss on the figure they paid just two summers ago.

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 Arsenal’s 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. 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.