I'll answer both questions on here. Honestly if anything maybe a 1,000 receiver will happen sooner than 1,000 yards rusher but I don't know any is going to happen anytime soon certainly not this season. Let's said Percy leaves early, Murphy will graduate Meyer will stockplie Talent and try to get the ball to everybody. He did have a 1,000 yard receiver in Utah and nearly another one the same 2004 season. As for running backs, there's three of them not counting Harvin and Tebow and all are young (Moody is a RS sophomore). I think it all depends on How much talent Meyer can get (very likely)?, and who can stay healthy? among other factors.