Radio Cadena Ser reports that the Old Lady are keen to make a move for Krkic as the striker could be set to leave Barcelona, due to a lack of first-team action at the club.
Inter Milan and Arsenal are also reportedly interested in the 20-year-old hitman.
Reports claim Barcelona coach Pep Guardiola is keen to keep the striker at the club.
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Liverpool have unveiled their new home kit for next season, sticking with the hugely popular retro styling of the current shirt.
The reputation of the Premier League means it is the most popular and one of the most watched leagues in the world.