Ideally, a young lineman such as Ben Powers, Tyre Phillips, or Ben Bredeson would step in at Yanda’s old right guard spot and never look back, but Fluker might just be an acceptable stopgap, especially considering the absence of the normal offseason program that’s so critical for the development of young offensive linemen. The 29-year-old Fluker has never lived up to his 2013 first-round billing, but he didn’t squander his time at home this spring and summer, estimating he’s lost 10 pounds and, more importantly, reduced his body fat from 44 percent to 22 percent since last year.