Michael Hoomanawanui: Hoomanawanui is similar to Hernandez in that he can be used in the "F" or move tight end position. He was often aligned out of the backfield last season, and he could be in line for a bigger role in Hernandez's absence. He was acquired at the start of last season and filled in sufficiently in spot duty.
Jake Ballard: An intriguing player, Ballard started Super Bowl XLVI for the Giants, but a knee injury has kept him off the field since that time. At 6-foot-6 and 275 pounds, he's built like Gronkowski, though he's not the same athlete. He appears to be close to his old self after extensive rehab, and if Gronkowski is not ready at the start of the season, Ballard is a candidate to step up.
Daniel Fells: Signed to a three-year contract last offseason, Fells had a quiet year in 2012. Nonetheless, he has good knowledge of the system, can play both tight end spots (Y and F), and has a soft pair of hands.
Zach Sudfeld: Sudfeld was solid in offseason workouts, showing off impressive pass-catching skills and dependable hands. The 24-year-old was undrafted out of Nevada, and while it's too soon to make a hardline statement on his outlook, he appears to be ready to compete for a spot on the roster.
Brandon Ford: Another undrafted free agent this April, Ford was limited in offseason work due to an undisclosed injury. We'll learn much more about him in training camp.