The real issue here is that an acquisition of CBS Radio will demand several billion dollars and create an overflow of FCC ownership limits in many of the markets with New York City and Los Angeles being just two of them when you think about how huge CBS Radio is. As a result, they'll be forced to sell a few of the stations anyway, which could include KABC and KLOS.
With regards to the land itself, I think finding another plot of land with sufficient soil conductivity to sustain the ground radial system on the KABC 790 AM transmitter could be a challenge given the geography, geology and cityscape of the Los Angeles area.