Raiders coach Jon Gruden recently compared Cooper to Tim Brown, saying he expects the 23-year-old wideout to be "the main vein of our passing offense", Scott Bair of NBC Bay Area reports. "[Cooper] has to get healthy and stay healthy," Gruden said. "We need him to be the player he was the first two years. I've said it earlier. We're going to make him the main vein of our passing offense and move him around a lot."