Costa had a disappointing start to the season
A swap deal could be on the cards, featuring Chelsea's Diego Costa and Jackson Martínez of Athletico Madrid.
According to reports, discussions of a proposed swap were prompted by Martínez's agent who said that the Columbian is ready for a change.
Meanwhile, Chelsea's Costa suffered a disappointing start to the season in the areas of discipline as well as scoring form and it is believed that Martínez would be a useful replacement for the unsettled striker.
Who is hated the most? RT for El Hadji Diouf LIKE for Diego Costa pic.twitter.com/waolv2nNjD— Football Battles (@FootbaIIBattIes) December 24, 2015
Speaking about the move, Martínez's agent said:
'I cannot say it's a lie. This is football and no-one knows what will happen in the future. What I want to say is that Jackson is not one of those who goes to a place if it is not through the front door.'