Eagles guard Todd Herremans will have surgery to correct a torn biceps in his left arm and will be placed on season-ending injured reserve, an NFL source said Tuesday.

Herremans' roster spot will be taken by guard Evan Mathis, who will come off the injured reserve-designated return list on Wednesday. Matt Tobin, who had been filling in for Mathis at left guard, will start at right guard for Herremans, the source said.

Herremans, 32, suffered the biceps injury late in the Cardinals game on Oct. 26. He played with a brace on his arm against the Texans on Sunday but left in the second half after he injured his ankle. The biceps injury was also clearly affecting his ability to block.

He will have surgery on Friday. The recovery time is expected to be three months.

"Thank you all, have no fear Philly Phaithful," Herremans posted on Twitter, "I will be back stronger than ever next year! Until then I'll just be a handsome cheerleader."

Herremans is in his 10th NFL season - all of which have been spent with the Eagles after they selected him in the fourth round of the 2005 draft. He has two years left on his contract, but none of the remaining $10.4 million is guaranteed.

The Eagles have been besieged by injuries this season, particularly on the offensive line. Allen Barbre, who was starting at right guard in place of the suspended Lane Johnson, suffered a season-ending ankle injury in the opener. Mathis sprained his knee in the same game and missed the next eight weeks.

Center Jason Kelce injured his groin in the third game of the season, underwent sports hernia surgery, and returned against the Texans. With Herremans done for the year, left tackle Jason Peters will be the only offensive lineman to start every game.

The Eagles have been dealt blows elsewhere. Quarterback Nick Foles broke his collarbone against the Texans and will be out for at least six to eight weeks. Mark Sanchez is his replacement. Linebacker DeMeco Ryans ruptured his Achilles tendon in Houston and was placed on IR on Monday.

Despite all the injuries, Chip Kelly's Eagles are 6-2 as they head into the second half of the season, which starts on Monday night against the Carolina Panthers.