It's been two years and two coaches since CU's last spring practices, and there will be questions aplenty when spring ball opens in late March: With Sam Noyer out (shoulder surgery) who will emerge as Noyer's primary challenger for the fall? Which running back will find a place in the lineup behind Pac-12 Offensive Player of the Year Jarek Broussard? Who will step up to replace K.D. Nixon in the wide receiver room? What will be the right mix among the returning starters along the line? And will 2021 - at long last - be the year of the tight end at CU?