Five-time Pro Bowler James Harrison, less than three weeks after returning to the Pittsburgh Steelers to officially retire, is now expected to be back with them in the wake of injuries to two starting linebackers, a league source told ESPN NFL Insider Adam Schefter.

Harrison, who tweeted early Monday night that he was willing to return for another season, was scheduled to meet Tuesday with Steelers coaches.

Assuming the meeting goes well, he was expected to sign with the team, the source told Schefter.

Harrison, 36, was a driving force from 2005 to 2010 on Pittsburgh teams that won two Super Bowls and played in another one.

He announced his retirement late last month via social media after playing one season with the Cincinnati Bengals.

On Monday, he weighed in via Twitter in the wake of injuries to second-year linebacker Jarvis Jones and rookie Ryan Shazier, whom the Steelers drafted this year in the first round with the 15th pick out of Ohio State.

They were hurt in Sunday night's 37-19 win over the Carolina Panthers.

I'll give it one more year! http://t.co/58xFfQaAfr - James Harrison (@jharrison9292) September 22, 2014

The Steelers placed Jones on the injured reserve/designated to return list Monday, meaning he'll be out at least eight weeks after dislocating his wrist.

Shazier sprained his knee and is expected to miss at least a couple of weeks.

Harrison's return to Pittsburgh for the official retirement had indicated there were no hard feelings over Harrison playing in Cincinnati after he and the Steelers couldn't agree on a pay cut in 2013.

"It's really family here, and I wanted to come back and finish it off where it started," Harrison said earlier this month.

Information from ESPN.com's Scott Brown was used in this report.