NFL Nation's Dan Graziano examines the three biggest issues facing the New York Giants heading into training camp.

The new offense: All eyes are on new offensive coordinator Ben McAdoo and a Giants offense that's likely to look much different from the one quarterback Eli Manning ran for his first 10 years in the NFL. The fact that Manning was able to bounce back from his ankle surgery and participate in organized team activities and minicamp was a huge help to the learning process, but it's still an extensive and complex process that could conceivably linger into the season. Pay particular attention to the running game, whose concepts seem to be more complex than what the Giants are installing in the passing game. David Wilson said last month that the new offense gives the running backs the ability to "create and dictate" plays, but obviously a lot of that is going to depend on the ability of the offensive line to get the play blocked. There are a lot of questions to be answered on the offense: Who will the starting center be? Who will play tight end? Will Chris Snee be able to hold up at right guard? Can Will Beatty recover in time to start the season? Do the Giants have enough at wide receiver? Is Wilson healthy enough to be a factor in the run game? But central to everything is the ability of the players on the field to smoothly integrate themselves into a new system -- and to do so in time for the start of the regular season.

The defensive line. The Giants let 2013 sack leader Justin Tuck and top defensive tackle Linval Joseph go in free agency. They believe that Jason Pierre-Paul is healthy for the first time since October of 2012 and can dominate from the defensive end position the way he did in 2011. And they believe that young defensive tackles Johnathan Hankins and Markus Kuhn are ready to take the next developmental steps needed to absorb Joseph's workload and stuff up the middle against opposing run games. But they'll need Mathias Kiwanuka, Damontre Moore or Robert Ayers to emerge as a reasonable pass-rush threat on the other side to keep offenses' attention away from Pierre-Paul. And without injured middle linebacker Jon Beason around for camp and possibly the start of the season to get and keep things organized in the front seven, it would help if someone from the defensive line group could fill at least part of the vast leadership void created by Tuck's departure.

Team chemistry. The Giants don't go away for training camp anymore. They have camp right at the same East Rutherford, N.J., practice facility where they do their work during the regular season. They'll stay in a hotel as if they were away for camp, and they'll spend long days together in meeting rooms, on the field and in the cafeteria. But one of the big stories of this Giants season is the ability of the coaching staff to integrate a group of new players into the team culture and find leaders to replace guys like Tuck, Terrell Thomas, Kevin Boothe and David Diehl, who are no longer around to serve as locker room pillars. The Giants are counting on the ability of venerable head coach Tom Coughlin and his staff to do that, and they believe Beason and Antrel Rolle have emerged in recent years as big-time leaders on and off the field. But the vibe in the locker room is going to be different with so many new faces in place and so many familiar ones gone. It will be fascinating to see how that all comes together, and whether one offseason and one training camp is enough to make it all work.