Juan Camilo Zuniga can join Barcelona for as little as £12.5m thanks to a clause inserted in to the player's contract, reports Spanish media outlet Sport.
The Napoli full-back was strongly linked with a move to Arsenal in the summer as the player stalled on a new contract with the Serie A side.
But Arsene Wenger, along with a host of other top European clubs, were left disappointed after the player signed a new long term deal worth £60,000-a-week.
With Arsenal baulking at the reported £23.5m asking price, Barcelona have stolen a march on the Gunners and received a timely boost in their chase for the Colombian international.
TalkSPORT reported that Real Madrid were ready to meet that asking price and officials from the Bernabeu had flown to southern Italy to thrash out negotiations regarding a summer move.
However, Spanish news outlets reports that Barcelona will be able to enter the race for Zuniga for a significantly lower fee.
A clause inserted in to Zuniga's new deal states that a bid of £12.5m from Barcelona must be accepted by Napoli.
Barcelona are believed to be in the market for a new full-back as the future of Martin Montoya remains uncertain.
The Spanish under-21 international's current deal expires in the summer and both Arsenal and Liverpool were reported to be interested in giving the defender a pre-contract offer in January.
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