JACKSONVILLE, Fla. -- The Jacksonville Jaguars have agreed to trade quarterback Nick Foles to the Chicago Bears, league sources told ESPN's Adam Schefter on Wednesday, just one year after giving Foles the most guaranteed money in franchise history.

The Bears are giving up their compensatory fourth-round pick (No. 140 overall), which means the Jaguars now have 12 picks in the upcoming NFL draft.

Foles has already restructured his contract with the Bears, a source told Schefter. He still has three years and $21 million guaranteed left on the deal, the source said, but Foles now has the ability to void the deal after either of the first two years, depending on the upside of his performance.

The move means the Jaguars will have to absorb $18.75 million in dead money in 2020. After cutting Blake Bortles last March, the Jaguars will now have paid $35.25 million in dead money over the past two offseasons.

Trading Foles means the Jaguars are going with second-year player Gardner Minshew as their starter, unless they plan to use their stockpile of picks to move up in the first round to draft a quarterback.

The Bears, meanwhile, entered the legal tampering period on Monday with an urgent goal to acquire a veteran quarterback to compete with starter Mitchell Trubisky.

The second overall pick of the 2017 draft, Trubisky finished the 2019 season 28th in Total QBR (39.4), tied for 27th in touchdown passes (17), 21st in passing yards (3,138), 32nd in yards gained per pass attempt (6.1) and 28th in traditional quarterback rating (83.0).

Trubisky had surgery in January to repair a partially torn labrum in his left shoulder but is expected to be ready when training camp opens in July.

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Adam Schefter explains why the Bears' trade for Nick Foles makes sense.

At last month's NFL combine, Bears general manager Ryan Pace reaffirmed the organization's belief in Trubisky, who threw for 3,223 yards, 24 touchdowns and 12 interceptions and rushed for 421 yards and three touchdowns in 2018. Pace, however, left the door open for possible competition at the quarterback position.

There is a strong familiarity level between Foles and Chicago's coaching staff. Bears head coach Matt Nagy coached Foles in both Philadelphia and Kansas City. Offensive coordinator Bill Lazor, quarterbacks coach John DeFilippo and offensive line coach Juan Castillo all overlapped with Foles during various stints with the Eagles.

The trade is just the latest career twist for Foles, 31, since Philadelphia drafted him in the third round in 2012. He started six games as a rookie in place of an injured Michael Vick and came in to replace Vick again in 2013, throwing 27 touchdown passes and only two interceptions in 13 starts. Foles led the Eagles to the playoffs and was the offensive MVP of the Pro Bowl.

Foles was the Eagles' unquestioned starter in 2014, but he suffered a broken collarbone in a Week 9 victory over Houston and finished the season on injured reserve. Coach Chip Kelly surprisingly traded him in the offseason to St. Louis for quarterback Sam Bradford, and Foles struggled with the Rams (7 TDs, 10 INTs) before being benched in favor of Case Keenum.

Foles has said multiple times that he considered retiring after the 2015 season because he had lost his love of the game. He agreed to sign with Kansas City as the backup to Alex Smith, mainly because he would be reunited with former Eagles coach Andy Reid.

Foles regained his passion for the game, went back to Philly as a backup QB and ended up coming off the bench in place of an injured Carson Wentz to start the final three games of the 2017 season. He threw for 971 yards and six touchdowns with one interception in three playoff games, and he was named MVP of Super Bowl LII after throwing for 373 yards and three touchdowns -- and catching a TD pass -- in a victory over New England.

He again backed up a healthy Wentz in 2018 but was pressed into service when Wentz suffered a back injury. Foles started the final five games of the regular season and two more in the postseason, which ended with the Eagles' divisional round loss to New Orleans.

Foles bought out his contract with Philadelphia for $2 million in February 2019, and the Jaguars signed him to a four-year, $91 million contract with $50.125 million guaranteed. At the time, Jaguars owner Shad Khan said the team had dreamed of signing Foles since the 2018 season had ended.

Foles was impressive during the offseason and training camp but played minimally in the preseason as part of coach Doug Marrone's effort to keep key players healthy. He played well early in the season opener against Kansas City, but he suffered a broken collarbone on the 11th offensive snap when he was driven into the turf by defensive tackle Chris Jones while throwing a touchdown pass to DJ Chark.

Foles missed the next eight games, and Minshew, a rookie sixth-round pick, captured the nation's attention with his run-around style of play, mustache and headband. The Jaguars went 4-4 with Minshew as the starter, but he struggled badly in the team's 26-3 loss to Houston in London, and Marrone opted to go back to Foles, who had been cleared to play.

Foles didn't play well in his return. The Jaguars managed just 13 points in a 20-point loss at Indianapolis and scored only three points in the first half of their next two games (at Tennessee and against Tampa Bay). He was particularly bad against the Bucs, turning the ball over on the Jaguars' first three drives -- the first QB to do that since Chicago's Mike Glennon in 2017 -- and posting three consecutive three-and-outs after those turnovers.

Marrone benched Foles at halftime of that game.

Minshew finished the season as the starter, and he had the best passer rating (91.2) and fewest interceptions (six) among rookie quarterbacks. Only the Giants' Daniel Jones (24) had more touchdown passes than Minshew's 21.

Foles said after the season that he didn't know what his future would hold but that he wasn't considering retiring.

"I know people will go there," Foles said. "It took me several months of sort of going through an eval, trying to figure out what I wanted to do until I had a moment where I prayed about what I needed to do, and it was ultimately getting back in football, facing my fear. Fortunately, the good Lord's allowed me to go through that before.

"... The one thing I know is I look forward to whatever happens, continuing to grow as a human being, player. Excelling and ultimately coming out slinging. I know I can still play. There's people out there that believe in me and I know what I can do, I've shown what I can do, so I look forward to what the future holds."

ESPN's Jeff Dickerson contributed to this report.