The Spanish Liga big spenders hope to take Lukaku on-loan in January.
Lukaku, 18, has started only two games for the west London club - both in the Carling Cup - following his £18m move from Anderlecht during the summer.
Tribal Football Staff are dedicated to the football tribes from all over the world. Our team is passionate about delivering football news to our hundreds of thousands of followers in all the corners of the globe. Football is life, It never stops, Neither do we.