Complex sentence: In 2006, the Regents of the University of California are considering a major renovation of Memorial Stadium that would include construction of a new seating structure, the so-called "eastside seating structure" on the promenade on the east side of the stadium.
Split into simpler sentences: In 2006, the Regents of the University of California are considering a major renovation of Memorial Stadium. One proposed idea for the plans is the construction of a new seating structure, the so-called "eastside seating structure" on the promenade on the east side of the stadium.