City officials are ready to pitch their plans to the NFL for an $800 million upgrade of the aging Los Angeles Coliseum in hopes of luring a professional football team back to town. The 67,000-seat reconstruction would include 15,000 club seats, 500 luxury boxes and state-of-the-art amenities. It would be constructed within the shell of the existing Coliseum, which hosted the 1932 and 1984 Olympics. The Coliseum is used by the University of Southern California football team, but it hasn't hosted a professional team since the Raiders in 1994. They returned to Oakland the next year.