Among the handful of sites under consideration are upper floors of the landmark Merchandise Mart in River North and Fulton Market Cold Storage, a large warehouse that’s slated for redevelopment in the West Loop, according to a source familiar with the matter.

via Google makes plans to move Motorola Mobility to Chicago – Technology News – Crain’s Chicago Business.

Motorola opened the campus at 600 N. US 45 in the early 1990s, and employed about 5,000 people at its peak.