Chelsea are considering a January swoop for Atletico Madrid playmaker Koke, according to talkSPORT.
Citing reports in Spain, they claim Jose Mourinho has been left suitably unimpressed with his current crop of creative midfielders and is determined to provide some fresh competition.
Koke is considered one of the best young players in his position and, at just 23-years-old, has already made over 150 appearances for Diego Simeone's men.
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The Blues have plenty of bridges between them and Vicente Calderon officials with as many as three transfer deals taking place between the clubs in the last two summers.
However, that is unlikely to help Mourinho seal Koke on the cheap. Indeed, the same report claims the La Liga outfit will demand as much as £40m to release him at the season's midway point.
Barcelona, whose transfer embargo is set to be lifted on January 1, are also likely to compete with any offer from Stamford Bridge. Luis Enrique has been looking to replace Xavi Hernandez and Koke has long been likened to the Nou Camp legend.
Chelsea's interest appears to have been borne out of Cesc Fabregas' ongoing struggle to find form. The Spanish playmaker has provided just one assist in eight Premier League games so far this season and has bared the brunt of criticism from both fans and pundits.
Currently sitting 16th in the table, it looks as though Mourinho is preparing to invest heavily in the winter window in an attempt to invigorate his squad. This report linking them with Koke comes only days after the Express claimed Chelsea would renew efforts to sign Everton's £36m-rated defender John Stones in January.