As Mikel Arteta attempts to hand-pick the best talents from La Liga, it seems as if Arsenal and Barcelona could go head to head on a few targets this summer. Arteta is aiming to improve his squad depth in several areas, a summer which will be designed to fine tune this Arsenal team. Edu will primarily look to offload players before welcoming new arrivals, even if Arsenal could make an exception with Riccardo Calafiori. But in the main, Arsenal hope to offload players on the periphery of things, then seeking high-calibre replacements. A plan all teams would be happy to execute – but one that’s …