Barcelona midfielder, Alex Song is to be used as part of a deal to bring Chelsea defender David Luiz to the Nou Camp.
The Spanish giants have identified Luiz as their number one target in the summer window, and are willing to make a deal happen as soon as possible.
It is understood Chelsea are looking for a fee in the region of £30 million pounds for Luiz, but Barcelona are looking to twist the deal by adding Song along with some cash.
Song has failed to become a regular in the Barcelona team since moving from Arsenal and is understood to be very keen on a move back to the premier league.
By Ollie Brown