Arsenal are likely to be busy on the transfer front in the coming weeks as Edu and Mikel Arteta look to strengthen their ranks. The Gunners have made one senior signing so far this summer, bringing Riccardo Calafiori to the Emirates from Italian side Bologna, and chances are they’re not done yet. Arsenal have been heavily linked with Real Sociedad and Spain midfielder Mikel Merino in recent weeks, with talks said to be at an advanced stage. Now, a report has emerged claiming the Gunners have been told the valuation of a player they have submitted a bid for over the past few weeks. READ MORE: F…