Iowa tight end Brad Herman has agreed to sign with Patriots as an undrafted free agent, per a league source. The 6-foot-5, 253-pounder had his best season as a senior, finishing with eight catches for 92 yards and a touchdown in 12 games (including three starts). He’s described by Pro Football Weekly as having “intriguing measurables, good straight-line speed and outstanding leaping ability.” To this point, he’s the second Iowa player who has signed with the Patriots as an undrafted free agent, joining teammate Markus Zusevics.