Arsenal boss Unai Emery is pushing to find an established, world class centre-half this summer.

The Sun says the Gunners boss has seen the way Liverpool have been transformed by £75m Virgil van Dijk and believes Arsenal need to follow suit to address his team's shortcomings.

Harry Maguire (Leicester City), Toby Alderweireld (Tottenham), Kurt Zouma (Chelsea) and Getafe's Djene Dakonam are all on radar — but none would come cheaply.

They are committed to paying £7m for Brazilian forward Gabriel Martinelli, 17, and are interested in £18m-rated Paris Saint-Germain midfielder Christopher Nkunku, 21.

But Arsenal's failure to appoint a director of football or replace head of recruitment Sven Mislintat is causing problems behind the scenes.