Gunner's in the mold of my favorite of all time, would be UDFA today / 8th rounder Troy Brown (and Julian, too), as someone who can be a 3 way player in a pinch, which is exactly the kind of guy BB loves. Remember his recTD? He had to go right back out for KR coverage. Since he was a CB out of college, I have to believe they've been working on that as well just in case.
Edelman had 7recs in his 2nd year and 4 recs in his 3rd year. Brown had 2, 0, and 14 recs his 1st 3 years. They were pretty much just return guys even though Edelman had 37recs his rookie year.
Sidenote: for Gunner's draft, he was listed as 5'10" / 178lbs and on the Patriots page, he's 6'0" / 190lbs. I understand the weight gain, but did he really grow 2 inches? These height/weight listings are all over the place, sometimes.