Chelsea plan to use cash raised from Juan Mata's sale to Manchester United on a new striker signing. The Daily Mail says United have learned Chelsea are interested in their transfer target Diego Costa, the Atletico Madrid striker.

Jose Mourinho has watched Costa personally in recent months and his interest could be aided by the fact that he shares the same agent, with the prolific 25-year-old striker signed up to Jorge Mendes.

A sale in January does look difficult though.

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