Real Madrid are lining up an audacious swoop for Manchester City\'s Sergio Aguero in a swap deal with Chelsea target Gonzalo Higuain. City do not want to sell Aguero who has played a pivotal role in their emergence as a genuine title contender this season. Chelsea are also keen on Higuain as they look to bring in a top-class striker this summer after slipping out of title contention. Higuain is reportedly ready to leave Madrid after falling down the pecking order and Chelsea, Juventus, Inter Milan and Paris Saint-Germain are also interested, according to the Mirror. City are also keen on Higuain but they would rather use rebel striker Carlos Tevez as bait in a player-plus-cash deal this summer. Chelsea have looked at Higuain in the past and the Argentinian has been watched by Stamford Bridge scouts. Under-pressure boss Andre Villas-Boas also rates Brazilian striker Hulk, who he managed at Porto.