Here are the New York Giants' coaching candidates

With the departure of longtime New York Giants head coach Tom Coughlin, several names have already swirled around the new coaching vacancy. Here are some names that have emerged already.

The current Chicago Bears offensive coordinator has been in the NFL since 2003, when he served as a scouting assistant for the Detroit Lions. Gase has served as an offensive coordinator for the last four seasons. From 2012 to 2014, Gase served as the offensive coordinator for the Denver Broncos, where his passing offenses consistently ranked in the atop of the NFL with Peyton Manning-led offenses. This year, the Bears total offensive yardage ranked 21st.

The Giants know McAdoo pretty well. He has served as their offensive coordinator for the last two seasons. And while the relationship between Coughlin and the Giants may have grown stale, there probably isn't an issue with McAdoo. His offenses have been very successful over the last two seasons. And Eli Manning and the rest of the Giants offense know what McAdoo is all about. It could be a simple fix for New York, but they will have to be quick: McAdoo has also interviewing with the Philadelphia Eagles.

The former St. Louis Rams head coach brings a large resume to the table. Spagnuolo, the current defensive coordinator of the Giants, has been in the NFL in a coaching capacity since 1999, when he came into the league as a defensive assistant with the Eagles. Spagnuolo has served as a defensive coach his whole professional career, but his most recent work in New York wasn't very pretty. His Giants defense was one of the worst units in the NFL.

The former Buffalo Bills head coach should generate some interest from several teams. Marrone, who is currently serving as the Jacksonville Jaguars assistant head coach and offensive line coach, helped produce one of the more surprising offenses in the NFL this season. Marrone also has prior NFL experience with the New Orleans Saints, serving as the team's offensive coordinator from 2006 to 2008. During that time, New Orleans passing offense consistently ranked among the NFL's best. He could be a good fit for the Giants' high-flying passing offense.

If the Giants have their eye on McDermott, who has made the Carolina Panthers one of the top defenses over the last five seasons, they may need to act fast. McDermott has a strong connection with the Philadelphia Eagles, having worked there for 12 seasons and attending college at nearby William and Mary, and he's already expressed interest in their open position. This season, the Panthers had the top defense in the NFL, and the Giants would love to revamp their defense a bit.

The Giants had a tremendously weak secondary, so why wouldn't they consider a new head coach with that particular specialty? Austin served has served as the defensive coordinator for the Detroit Lions for the past two seasons. This year, his Lions were strong against the pass, allowing the ninth-most yards in the NFL this year. Prior to Austin's arrival in Detroit, Austin served as the secondary coach for the Baltimore Ravens for two seasons, the defensive backs coach for the Arizona Cardinals for three seasons and the defensive backs coach for the Seattle Seahawks. Wherever Austin goes, his defenses tend to get stronger, and that might work out well for the Giants.