The Kohl's-Aldi tie-up, though, could be promising for both retailers, she said. The arrangement allow Kohl's to rack up additional foot traffic without having to figure out how to operate a grocery business. And for Aldi, renting space within Kohl's stores is likely to be less costly than building stand-alone locations. The partnership would also help familiarize mainstream America with the German grocery chain, which arrived in the U.S. less than a year ago.