The Spanish football correspondent was on the popular sports-based radio station this morning, talking about all things La Liga.
However, halfway through his Champions League review - he directly addressed the Chelsea supporters.
'I want to throw a point in for Chelsea listeners though,' said TalkSport's Hunter.
'Courtois I mentioned, the Belgian goalkeeper contracted to Chelsea that has been one of the two, or three heroes of the season for Atletico and kept them in the tie.'
'When Chelsea lost to Atletico Madrid in the European Super Cup final they reintroduced a clause saying: 'if you want him to play against us at any time in the future, you have to pay.' My understanding is that fee is about €3million.'
'If the draw tomorrow puts Atletico and Chelsea together in the semi-final, in principle Courtois, that rock solid goalkeeper Jose Mourinho wants to be number one at Stamford Bridge next season, can't play unless Atletico dig into their coughers and pull out €3million.
'Or they could begin to throw that against a future negotiation for Diego Costa, where they say: 'if you wipe out the clause, we will take that off the Diego Costa fee in the summer.'
The deal, on the face of it, would put Chelsea in a fantastic position going into the summer transfer window. The need for a striker at Stamford Bridge hasn't been one that Mourinho has kept particularly quiet. On a number of occasions this season, the Portuguese manager has made reference to his blunt strikeforce and a striker of Costa's calibre is high on the list.
Presuming, Chelsea do get matched with Atletico tomorrow then it will a case of 'deal or no deal' for Mourinho. Any deal regarding Costa will be beneficial in the long-term, however, Courtois has nearly been unbeatable for Atletico in the Champions League this season.