Fyffes has granted its proposed merger partner Chiquita permission to talk to rival bidder, Cutrale-Safra.

The proposed merger of Fyffes and US rival, Chiquita has been thrown into further doubt, with two more investor advisory firms urging the American firm to adjourn an upcoming shareholder vote and engage in discussions with a rival bidder.

Brazilian juice giant Cutrale is expected to return with an improved offer for US fruit producer Chiquita Brands, keeping the latter’s planned merger with Dublin-based banana distributor Fyffes in doubt.