Chelsea have offered Romelu Lukaku to Atletico Madrid in part exchange for Diego Costa. The Daily Mail says it is understood the Belgian will have to overcome his reservations about moving to Spain because of the risk of racist abuse and the soft punishment Villarreal received when a fan threw a banana at Dani Alves.
Costa is Jose Mourinho's prime transfer target this summer and the Chelsea manager wants business concluded quickly.
The 25-year-old, who is expected to make the Spain squad for the World Cup, has scored 27 goals this season but has a buy-out clause in his contract of about £32million.
