La Repubblica claims Barca boss Tata Martino will meet Guarin's agent in the coming days to discuss a potential January deal for the Colombian international.
Chelsea had been heavily linked with the Inter Milan star, with several reports suggesting a £13m bid had been made by the Stamford Bridge club and rejected.
Inter reportedly wanted closer to £15m, and in the past few days talk of a transfer to Chelsea has cooled considerably.
The Italian side reiterated their happiness to keep Guarin at the club but it now seems he could still be on his way after all.
Although Barca have not moved to sound out Guarin's interest, the report claims that could change very soon with Martino thought to be a big fan of the midfielder.
But despite a lack of recent Chelsea transfer talk, they may yet move again for Guarin as Jose Mourinho is short of options in midfield.
The Blues are reliant on a 35-year-old Frank Lampard who can't play every game over the course of a season, with Michael Essien now often relegated to the bench and cup duty.
Marco van Ginkel was ruled out for the campaign at the beginning of the season with a ligament injury, leaving Ramires, Lampard and John Obi Mikel as first-team midfielders.