Folsom's deal is for 4 years and is reportedly worth $1.812 million - including $62,000 in guaranteed money.
Folsom is expected to be in a battle just for a practice squad spot at inside linebacker. At 6'3, 230, he doesn't possess the prototypical size that this regime is believed to like at linebacker. But he has good speed and projects more as a special-teams player than anything else at the next level.
This makes four draft picks now under contract - with John Nalbone, Andrew Gardner, and Patrick Turner being the other three. It's also believed that the Dolphins are close to a deal with safety Chris Clemons.