Two national companies partnering on the redevelopment of the former Oscar Mayer campus on Madison’s East Side say they’ve already got one letter of intent from a potential tenant and are doing at least a tour a week for others.

Representatives from Reich Brothers Holdings and Rabin Worldwide declined to name the companies that have shown interest in parts of the 72-acre site, but outline a vision for the property that could include everything from food processing to light industrial to warehousing to “server farms.”...