MINNEAPOLIS -- We're continuing our look at the Vikings' free agent needs today with our first trip to the offensive side of the ball. The Vikings' offensive line struggled last season, even before it was decimated by injuries. And as much attention as was paid to left tackle Matt Kalil last season, the spot next to him might be more ripe for an upgrade.
Left guard
State of the position: The Vikings ensured their line would remain intact for a third consecutive season when they brought Charlie Johnson back on a two-year deal. But Johnson flailed in pass protection, allowing five sacks (according to Pro Football Focus) and frequently pressure when he and Kalil struggled to pick up blitzes. Johnson has no guaranteed money on his 2015 deal, and while the Vikings haven't indicated what they play to do with the 30-year-old, it seems reasonable to expect a change here.
Draft vs. free agency: There are enough options in the rookie class that the Vikings might be comfortable with avoiding a big expense in the draft. Numerous mock drafts have them taking Iowa tackle Brandon Scherff, who might be able to move inside and anchor the left side of the line with Kalil. LSU tackle La'el Collins could do the same, and with as much money as the Vikings already have committed to their line, they might understandably be leery about another big expense for the group.
Cream of the crop: Denver guard Orlando Franklin figures to command lots of interest if he reaches the open market, though it's worth remembering how many offensive linemen look better with Peyton Manning orchestrating things behind them. San Francisco guard Mike Iupati's name comes up in fan questions quite often, and while Iupati would give the Vikings another mauler opposite Brandon Fusco, his flaws in pass protection might diminish how well he'd fit in Norv Turner's offense.
Other options: Cincinnati guard Clint Boling played every snap for the Bengals last season; he gave up only three sacks last season, and has shown he can handle defensive tackles in the running game. He could be a good bargain for the Vikings, compared to what it would cost to sign Franklin or Iupati, and doesn't turn 26 until May.
Growth from within: David Yankey looked like he could be a steal when the Vikings took him in the fifth round last spring, but the common reason offered for Yankey's absence as a rookie -- that he needed to get stronger -- was a bit concerning, considering his size and his reputation as a road grader at Stanford.