Whether it may be for contracts ending, getting traded, or players getting released, NFL teams can change drastically from year to year.
Every year, there are some really good, quality players who become free agents or go on the trade block and other teams look to fill their needs by bringing these guys in.
The Packers could lose key players in the 2011 offseason.
When I looked up the contract situations of each Packer player, I was surprised to see that our solid kicker Mason Crosby was a free agent after this season.
A four-year career of just over 78% and a 2010 average of about the same, he's been a solid player in the NFL.
Probability he stays: Very likely
After Ryan Grant went down in Week 1 with an ankle injury, Brandon Jackson was given the starting job but never showed up to seize the moment.
He's been a back-up at best, and while some believe he wasn't given a true chance to shine, there's a reason why James Starks was given the most carries this year against the Eagles.
With Grant coming back next season, as well as John Kuhn likely being resigned, and the emergence of Starks in the playoffs, the Packers' backfield looks crowded.
Probability he stays: Very Unlikely
Ever since Hawk came into the league, he has been under expectations. This year, he's actually had glimpses of the first-round draft pick that he was and has had a career year in passes defensed and interceptions, as well as No. 1 on the team in tackles.
While he's looking like a solid player, $10 million is probably too much to keep a player when we have others looking for contracts after this season.
Probability he stays: Unlikely, unless contract is extended/restructured
While Morgan Burnett started the first four games at safety opposite Pro Bowler Nick Collins, he went down with a season-ending injury and Charlie Peprah stepped into place. He was signed to a one-year contract in April.
He's been solid going down the stretch and many Packers fans would love to see him re-sign with the team.
Atari Bigby becomes a free agent after the season, but Charlie Peprah may be looking to be a starter whether or not it's with the Packers.
He has a chance to be one, but Morgan Burnett will be fighting for the starting position this offseason.
Probability he stays: Undecided. It depends on what happens with Atari Bigby, and what type of contract Peprah is looking for after a solid year.
Colledge has to go. He's never been more than backup-quality, and he will be leaving after this season, unless he resigns with the Packers in the field of a three-year, $9 million contract. He would be able to get a lot more money by leaving the Packers.
Probability he stays: Very unlikely. The Packers will likely draft an offensive lineman or two in the first three rounds of this April's draft, due to Clifton aging and Colledge getting shown the door.
James Jones is a great football player, but what worries many football fans is his drops. He's dropped at least two wide-open touchdowns this year that I can remember, one being in the playoffs.
He's being touted as the guy who will take over Donald Driver's spot in years to come when Driver retires, and he has a good chance of doing that
He runs hard, almost like a running back, when he has the ball. But he needs to prove that he can catch balls consistently.
Although I personally would love to see him as a Packer next year, many teams are looking for options at wide receiver, and James Jones could get more money from another team.
Probability he stays: Undecided. The Packers usually pay their home-grown talent well, so hopefully they will lock him up for years to come.
Just as Spencer Havner was our secret weapon in 2009, John Kuhn has emerged as the Packers' 2010 secret weapon.
After getting switched to a running back following the Grant injury, he's had 281 yards on 84 attempts with 4 touchdowns rushing and 2 touchdowns receiving. These numbers do not give the full story, as over a quarter of these carries were for first downs.
Every time Kuhn steps on the field, the Packers fans erupt with a bellowing "Kuuuuuhn." He's a fan favorite and even though most teams know he's getting the ball, he usually just jumps over defenders to make a big play, pictured left.
Probability he stays: Definitely
Johnny Jolly signed a one-year contract in the 2010 off season, months before finding out he will be getting suspended for an indefinite amount of time because of the drug charges.
Jolly was looking to cash in on a starting amount contract with another team after the 2010 season, but he may have to settle with a few more years of getting paid back-up money since he's been out of football for a whole season.
I don't see more than a few teams interested in him after the season, and I think the Packers will make an effort to keep him after letting Cullen Jenkins cash in.
Probability he stays: Very likely
Cullen Jenkins has been hampered by injuries all season long, but even when he's playing with an injury, he always pushes the offensive linemen backwards.
While every Packer fan would love to see him back, he's going to be looking for a big contract and the Packers have CJ Wilson, Jarius Wynn, Ryan Pickett, Justin Harrell and Mike Neal under contract.
It's hard to see Cullen Jenkins getting a big contract from the Packers when we have several other men on the roster who have shown promise.
Not to mention a very Jolly (Johnny) man possibly coming back from a suspension.
Probability he stays: Unlikely