Mikel Arteta has been warned that new signing Martin Zubimendi may not be a ready-made fit for Arsenal ’s midfield. The Gunners finally confirmed the long-awaited signing of Zubimendi on the weekend, with the midfielder joining from Real Sociedad for £51million.

Martin Zubimendi, the 26-year-old Spain international, has joined Arsenal from Real Sociedad on a five-year contract for a fee of around €65million (£55.8m; $76.6m). Arsenal will pay more than Zubimendi’s €60million release clause but the compromise means they will be able to pay the fee in installments, rather than as one lump sum.