Supervalu here said last week that it has reached an agreement to sell its Albertsons, Jewel-Osco, Acme, and Shaw’s and Star Market banners to a group led by Cerberus Capital Management in a transaction valued at $3.3 billion. The deal, projected to close by the end of the first quarter, would reunite the two Albertsons banners that had been split since Supervalu acquired most of that chain in 2006.