Arsenal’s perfect transfer window: 7 in, 6 out for Gunners, with Mandzukic & Aurier signing

5) Carlos Vela – Real Sociedad

Arsenal have an option to sign the Mexican 25-year-old for £3.5m, after inserting a clause into his contract when they sold him to Real Sociedad. He scored 16 La Liga goals, and assisted 12 more last term – and would prove a real bargain Emirates signing.