Following the selection of Book, here is a look at the Saints' current offensive depth chart:
QB: Taysom Hill, Jameis Winston, Trevor Siemian, Ian Book
RB: Alvin Kamara, Latavius Murray, Dwayne Washington, Ty Montgomery, Tony Jones Jr.
FB: Alex Armah
WR 1: Michael Thomas, Marquez Callaway, Juwan Johnson
WR 2: Tre'Quan Smith, Deonte Harris, Lil'Jordan Humphrey
TE: Nick Vannett, Adam Trautman, Garrett Griffin, Ethan Wolf
LT: Terron Armstead, James Hurst, Ethan Greenidge
LG: Andrus Peat, Derrick Kelly II
C: Erik McCoy, Will Clapp, Christian Montano
RG: Cesar Ruiz, Calvin Throckmorton
RT: Ryan Ramczyk, Ethan Greenidge
For the first time since 2005, the Saints are set to enter a season without future Hall of Famer Drew Brees as their starting quarterback.
Brees announced his retirement this offseason after 15 seasons with the Saints and 20 NFL seasons overall.
New Orleans re-signed Jameis Winston in free agency, brought back veteran Trevor Siemian on a reserve-futures contract and retained Taysom Hill from last year's roster as well.
When Brees missed time with a rib injury last season, Hill started over Winston. It appears both Hill and Winston will be given every opportunity to win the starting job entering the 2021 campaign.
Book is a developmental prospect who will hope to make the roster as the No. 3 quarterback in 2021, and he may have ended up in the best possible landing spot.
One of the biggest knocks against the 6'0" Book is his size, but Brees faced similar criticism during his career and developed into one of the best quarterbacks in NFL history.
The 23-year-old Book set the Notre Dame record for wins as a starting quarterback with 30 during his college career and twice led the Fighting Irish to the College Football Playoff.
In 45 career appearances, Book completed 63.8 percent of his passes for 8,948 yards, 72 touchdowns and 20 interceptions while also rushing for 1,517 yards and 17 scores.
Book has some shortcomings in his game in terms of arm strength and even accuracy at times, but he possesses the types of intangibles that Saints head coach Sean Payton will undoubtedly love to work with.