David Luiz and Juan Mata are both being heavily linked with moves away from Stamford Bridge but who's exit would be the most damaging for the Blues?
Jose Mourinho surprised onlookers at his press conference on Wednesday, revealing that his "door would be open" if Juan Mata sought an exit from Stamford Bridge.
Chelsea triumphed 3-0 at Southampton on New Year's Day but the Spaniard - the club's player of the season in 2011-12 and 2012-13 - was substituted in the 53rd minute, much to his annoyance.
In the wake of his disgruntled march off the pitch, Mourinho refused to rule out selling the 25-year-old if he asked to leave.
Meanwhile, Goal exclusively revealed on Thursday morning that Barcelona have stepped up their interest in David Luiz. The Brazilian has featured more prominently for the Blues over the festive period but has been the subject of speculation ever since the Portuguese coach arrived in west London.
The Catalans enquired about the defender last summer but are now looking to prise him away from Stamford Bridge. Sources close to the club believe Chelsea and Mourinho would be willing to part with the 26-year-old for a significant fee.
Who would Chelsea miss more if they were to sell both Mata and Luiz?
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