The outside linebacker position can be a very productive position in a 3-4 defense like the Packers run, and they're obviously looking for options to place on the opposite side of Clay Matthews.
Both Lattimore and So'oto would both be longshots to contribute this season, but the same could have been said about Frank Zombo last year, and he went on to tally four sacks in the regular season and another in the Super Bowl.
Lattimore is 6-2, 230 pounds and was the Sun Belt Conference Defensive Player of the Year as a senior after racking up 64 tackles, 11.5 sacks, two blocked kicks, two forced fumbles and a fumble recovery.
He actually tied the school record for sacks in a single season to match another Packers linebacker, Erik Walden.
So'oto played defensive end for the Cougars in college, but his 6-3, 263 pound frame makes it very likely he'll play outside linebacker with the Packers.
He had 44 tackles, five sacks and one interception last season to earn first-team All-Mountain West honors. He also had 10.5 tackles for a loss, which was reportedly good for first on his team and third in the conference.
So'oto will be competing for a roster spot with another outside linebacker from Bringham Young, Brady Poppinga, assuming Poppinga's contract does not not make him cost-prohibitive.
NFLDraftScout.com notes that So'oto is coming off a foot injury.