Although all three young defenders are in their prime and pivotal to the Ravens' bid to reach and win the Super Bowl heading into Sunday's AFC championship game against the New England Patriots, this could be their final game playing for the AFC North champions.
"When a team has success like the Ravens, they're always going to feel better about extending their guys if they can," said former Green Bay Packers vice president and chief negotiator Andrew Brandt, an NFL business analyst for ESPN. "At the end of the day, it comes down to decisions made after the emotion of the season has died down. They're difficult choices about a group of good, young players.
"They've got quality players, but the key for them is prioritizing. Beyond Flacco, where do you spend your energy and money? They've obviously got some tough choices facing them."
Bracing for free agency, Ellerbe recently hired Georgia-based agent Hadley Engelhard. And Kruger is switching to Athletes First, a large California firm that's the fourth agency to represent him since he entered the league as a second-round draft pick from Utah in 2009.
In particular, Kruger's star is rising after his career-high nine sacks in the regular season and 2 1/2 more in the playoffs.
Pass rushers tend to receive big-money contract offers, even situational ones like Kruger.
Last year, Kamerion Wimbley signed a $35 million deal with the Tennessee Titans and Mark Anderson received $28 million from the Buffalo Bills.
Although Kruger prefers to remain in Baltimore, he could potentially command offers in the $35 million to $40 million range that the Ravens can't afford to match.
"There's nothing I want more than to remain a Raven, but I haven't really thought about it," Kruger said. "It's an awesome place to play. I would love to be here."
Strong safety Bernard Pollard is certain that Kruger is going to cash in on the open market.
"Paul's setting himself up for the future," Pollard said. "I think he has a good shot at breaking the bank because this league, this team, we want pass rushers. We want guys who can rush the quarterback and Paul is a heck of a guy to do that."
So much hinges on the pending offseason negotiations between Ravens vice president of football administration Pat Moriarty and Flacco's agent, Joe Linta, who has repeatedly labeled the former Delaware standout a "top five elite quarterback."
If the Ravens have to use the franchise tag on Flacco by a March 4 deadline, it will make it harder to keep their defense together.
"It all starts with the quarterback," said Brandt, who's also a professor at The Wharton School of Business at the University of Pennsylvania. "They're obviously not going to let him go, so it's either sign him to a long-term deal or franchise him. He's their No. 1 priority. How much cash and cap does that leave for the remaining group?"
With 42 contracts on the books for 2013, not including the $4.35 million the Ravens will save with inside linebacker Ray Lewis' pending retirement, Baltimore is already at $107.396 million in salary-cap commitments for next season. That includes the $1.182 million the Ravens are allowed to carry over to next season, and $1.8 million in remaining dead money for former Pro Bowl kicker Billy Cundiff even though he's no longer on the roster.
The savings that will be realized by the end of Lewis' career could allow the Ravens the option to keep Ellerbe.
With 89 tackles and 4 1/2 sacks, Ellerbe's value has skyrocketed, especially since Lewis is departing and Jameel McClain has to prove he's healthy again after a spinal cord contusion. However, Ellerbe could cost over twice as much as McClain's $10.5 million contract, which he signed last year.