Chelsea will pay a £3.4m (€4m) loan fee and will have the option to buy the Spain international for £30m (€35m) next summer.
Chelsea ayaa bixin doonta £ 3.4m (€ 4m) oo amaah ah waxayna fursad u heli doontaa inay ku iibsato xiddiga reer Spain £ 30m (€ 35m) xagaaga soo aaddan.