Guard
David Diehl really struggled in his first season at left guard, though he also played some left tackle. He was rated as one of the worst pass blocking guards in the league and allowed 13 sacks, 61 pressures, and 6 penalties over their Super Bowl run. He could be moving to right tackle next year because Kareem McKenzie, who also struggled this year, is a free agent and is not expected back. They’ll need a new left guard.
Middle Linebacker
Chase Blackburn may have made the game altering pick in the Super Bowl, but he was unsigned as late as November (cut to Patriots fans grimacing). Blackburn played well down the stretch, but he’s a free agent and there’s a reason why he was available in November. He’s never been a consistent starter in this league. They could use a long term solution at the position.
Offensive Tackle
David Diehl could be moving to right tackle in place of Kareem McKenzie, but given how bad Diehl was last year, I don’t think that’s the answer. 2011 4th rounder James Brewer might be, but they also might want some competition.
Running Back
Brandon Jacobs will not be back unless he takes a major paycut and he may opt to be released instead. That will leave them needing another running back to pair with Ahmad Bradshaw, who is injury prone and not capable of carrying the load.
Tight End
The Giants lost both Jake Ballard and Travis Beckum to major injuries in the Super Bowl and needed tight end help anyway. Now they really need tight end help, especially short term, but also long term possibly as well.
Safety
Antrel Rolle is a big name, but no safety allowed more completions or yards than him last season and it wasn’t even that close. Rolle allowed opposing quarterbacks to go 57 of 76 for 642 yards, 3 touchdowns, and 2 picks last year. He’s been overrated for years. There’s a reason the Cardinals cut him loose for nothing. The Giants should do the same, though they probably won’t. Competition would be nice here.
Cornerback
Along with their offensive line, their pass coverage was their biggest weakness last year. Their pass rush masked it on their Super Bowl run, but it was bad at times. They were ravaged by injury back there and could really use some more depth.