Arsenal have been linked with a move for another defender before the transfer window is closed next week.
New Arsenal manager Unai Emery, who replaced Arsene Wenger just over two months ago, watched his side wrap up their pre-season activities with a comfortable 2-0 victory over Lazio on Saturday.
The Gunners have already secured five new additions this summer but there could be at least one more new signing on the way before the transfer window closes.
According to the Sun, Arsenal are now eyeing a move to sign Domagoj Vida this summer.
The fact that Shkodran Mustafi has continued to be linked with an exit means Emery could consider a deal for a potential replacement for the German.
Arsenal are reportedly looking to make an offer of £25million for Vida, who featured for Croatia as they managed to reach the final of the 2018 World Cup where they lost to France.