Arsenal’s quest to sign Gyökeres has veered on the fringes of farcical in recent weeks. Negotiations with Sporting CP have seemingly been conducted in the public eye, with each twist and turn rapidly leaked to the press in between explosive outbursts from the Portuguese champions’ president, Frederico Varandas.

Arsenal have reached a full agreement with Sporting CP for the transfer of Viktor Gyokeres. The Premier League side will pay an initial €63.5million (£54.8m; $74.2m) plus €10m in add-ons. Gyokeres has been given permission to travel by Sporting and is expected to undergo his Arsenal medical on Saturday.

The Gunners remain calm over Gyokeres but are growing frustrated with Sporting’s refusal to compromise, as talks over a summer move continue to stall.