Finally, Jimmie Ward is cleared for takeoff.The 49ers' No. 1 draft choice – who hasn't yet been able to practice because of an injury – is now completely healthy and ready to start work at the Niners' training camp in Santa Clara. Rookies could start reporting Wednesday, with the first practice set for July 24.Ward, a safety from Northern Illinois, had a foot injury that kept him on the sidelines during organized team activities and the full-roster minicamp in June. - 49ers Cut Ribbon at Levi's StadiumBut Ward is part of a 49ers grand experiment that will shift him toward the competition at nickel corner, and he'll need on-field work during training camp and exhibition games if he's going to develop in time for the team's regular-season opener Sept. 7 at Dallas.In his absence this spring, veteran Perrish Cox and Darryl Morris, a second-year pro who excelled on special teams in 2013, got most of the snaps at the third cornerback spot.As Matt Barrows of the Sacramento Bee wrote this week, Ward is a multi-dimensional player (he also played corner and nickel in college) who could bring some special skills to the 49ers secondary."The 49ers are eyeing him for the nickel spot...