Five who could make significant jumps
Mitchell Trubisky, QB, Chicago Bears
That 2017 Bears offense didn't scare teams, and Chicago didn't have the targets in the passing game to create stress for opposing secondaries. Load the box and play man coverage. Defenses could keep it simple.
Despite passing for more than 200 yards in just three of those 12 starts, however, Trubisky showed flashes of his athleticism and arm talent. He showed the ability to anticipate throwing windows. And with Nagy & Co. installing a system that will better cater to Trubisky's talent, the arrow is pointing up on the former No. 2 overall pick.
During free agency, the Bears added a top target for Trubisky in wide receiver Allen Robinson, who's a technician in the route tree with the ability to make plays over the top and produce in the red zone. The former Jaguar, who tore an ACL in Week 1 last season, racked up 18 red zone touchdowns from 2015 to 2016. Tight end Trey Burton is the new "move" guy in Nagy's offense, a matchup piece who can align in multiple spots. And wide receiver Taylor Gabriel brings some real speed to Chicago with the change-of-direction skills to break down defenses in the open field.
These are major upgrades for Trubisky compared to the lineup he worked with last season, and Nagy's offense -- a modern twist on the West Coast passing game -- should jump-start Trubisky's development. Just look at Jared Goff and the Rams hiring Sean McVay as a potential blueprint.