1. Diego Costa – Atletico Madrid
As good as Atletico are at the moment, the chances of holding on to the Brazilian-born Spanish striker for the long term aren’t likely to be very good, especially if their season begins to unravel at any point and the slide further behind the big two of Barcelona and Real Madrid.
His record of 16 goals in 17 games this season has seen his star rise even further from where it was last term and his signature is one of the most sought after in Europe.
Rumour has it that manager Jose Mourinho is even prepared to ditch his interest in Monaco’s Radamel Falcao, himself a former Atleti star, in favour of Costa because of his work rate and prowess in front of goal.
Quality up front is in short supply at Stamford Bridge this season and Costa would certainly provide them with a lift. Furthermore they have yet another former Atletico man to barter with in the shape of Fernando Torres. The World Cup winner has struggled since arriving in West London and could welcome the opportunity to make the move back home.