The Jaguars' front office decided to work during its bye week. The team made a blockbuster trade with the Buffalo Bills to acquire former All-Pro defensive tackle Marcell Dareus Friday.
The Bills received a 2018 sixth-round pick in return.
The team released veteran linebacker Jonathan Freeny in a corresponding move. Freeny was signed earlier in the week.
Dareus passed a physical administrated by the Jaguars Saturday.
"Marcell Dareus is an experienced player who has been productive throughout his career," Jaguars Executive Vice President of Football Operations Tom Coughlin said.
"He will be a good fit with our team and our defense. We expect him to be stout against the run and to be able to put pressure on opposing quarterbacks. This was a great opportunity to acquire a proven player who can come in and help us immediately."
The 6-foot-3, 331-pound defensive lineman wasn't a great fit for first-year Bills head coach Sean McDermott's natural one-gap, 4-3 defense.
He will now most likely slide into the Jaguars' front four as a nose tackle. Defensive coordinator Todd Wash will likely use Dareus as a rotational piece at defense tackle on passing downs.
Wash's defense features more hybrid looks than the Bills' attack, allowing Dareus to play in a spot that fits his strengths.
The Jaguars start Malik Jackson at three-technique and Abry Jones at nose tackle. Dareus is likely to compete with both for playing time.
This move by the Jaguars indicates a desire to win now and beyond. Dareus is in the third year of a six-year, $95.1 million deal he signed in 2015.
Jaguars head coach Doug Marrone and assistant defensive line coach Jason Rebrovich worked with Dareus in Buffalo.
Dareus was the third overall pick in the 2011 NFL Draft. He has played for the Bills throughout his entire seven-year career.
Through five games (three starts) this season, Dareus has produced eight tackles and a sack.
A two-time Pro Bowl selection, Dareus has produced 300 tackles and 35 sacks during his career.
Follow Mike Kaye on Twitter at Mike_E_Kaye.