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With the Blues on the brink on completing the £32m signing of Atletico Madrid star Diego Costa, boss Jose Mourinho is prepared to ship out the Belgian.

The Portuguese even tried to use Lukaku as a makeweight in the deal, in order to reduce the transfer fee for Spain striker Costa.

Reports also suggest La Liga giants Valencia are also keen on bringing in the 21-year-old, who has spent the last two seasons on loan at West Brom and Everton.

The Toffees are keen on bringing him back to Goodison Park after he helped fire them into Champions League qualification contention this season.

Tottenham are also keen for Lukaku to move across London to White Hart Lane to provide competition for Roberto Soldado, Emmanuel Adebayor and youngster Harry Kane.

Lukaku has not had a chance to impress at Stamford Bridge since his £18m move from Anderlecht in 2011.

He has made just one league start for the Blues, and 15 appearances in all.

The Belgium striker has never scored for Chelsea.