The Chicago Bears announced Tuesday that offensive coordinator Mike Martz and quarterbacks coach Shane Day will not return next season.

That news came hours after the team announced that general manager Jerry Angelo was being relieved of his duties.

Team president Ted Phillips said Tuesday that Martz's dismissal was coach Lovie Smith's decision.

"He decided today. That was Lovie's decision," Phillips said. "He's always had the decision making authority on his coaching staff and that's going to stay the same way."

He added: "Lovie met with Mike, they had some philosophical differences and a parting of the ways. That's the way to put it."

The changes come after the Bears finished 8-8 following a

collapse marked by season-ending injuries to quarterback Jay Cutler

and running back Matt Forte, along with the arrest of backup

receiver Sam Hurd on federal drug charges.

Chicago dropped five in a row following a 7-3 start before

closing out the season with a win at Minnesota.

"It's a real difference of philosophy," Martz, who had an expiring contract, told ESPN 1000's "The Carmen, Jurko & Harry Show" off the air. When asked if he would like to join the show on the air, he said: "The less I say the quicker we can move on."

Smith, who survived the front-office shake-up, thanked Martz in a statement.

"After meeting with Mike this afternoon, we both felt it was best to move in different directions," Smith said. "I appreciate the job he and Shane did for us over the last two years."

Martz hadn't directed a top-10 offense since 2004 in St. Louis. The Bears finished ninth in the league in rushing (2,015 yards), generating their best numbers in that category since 2005 while marking just the second time the team eclipsed 2,000 yards on the ground since 1990. And Forte missed the last four games after sustaining a knee injury early in Week 13.

The offense accomplished that feat despite using six combinations of starters on the offensive line, and three different starters at running back.

Bears receivers Earl Bennett, Devin Hester and Roy Williams campaigned for Martz's return after the team's season-ending win over the Minnesota Vikings.

Cutler, whose season-ending injury coincided with the five-game skid, had said he didn't want to have to learn a new system for the third time since joining the Bears in 2009. Ron Turner preceded Martz.