Sources: Arsenal poised to complete huge signing within next 24 hours

Arsenal are on course to complete the signing of leading summer target Mikel Merino within the next 24 hours as significant progress has been made in the Premier League title-chasers' attempts to lure the Real Sociedad star to the Emirates Stadium, GIVEMESPORT sources have revealed.

Gunners boss Mikel Arteta, who saw his side get the season underway with a home victory against Wolverhampton Wanderers, has remained in the market for further reinforcements despite bolstering his defensive options with the £42million acquisition of Riccardo Calafiori from Bologna last month.