What that means is it leaves a space to fill. The Dolphins had made plans for Misi to return in some form and coach Gase was surprised that Misi had not made it back to being healthy. Although Misi was limited to just 128 snaps last season playing in just three games having started two with only 11 solo tackles and the same amount of assisted ones. It was his prior season that the Dolphins had hoped to draw from when he played and started in 13 games having made 59 solo tackles and 19 assisted.
Misi had only made himself available to play every game of the season in his first rookie season back in 2010.