The 31-year-old is very familiar with Falcons coach Dan Quinn from their time together in Seattle, where the latter was defensive coordinator before moving to Atlanta. In two seasons playing under Quinn, Irvin compiled 88 tackles, 8.5 sacks, five passes defended, three interceptions, two forced fumbles and scored twice.
Born in Atlanta, Irvin's return home could be mutually beneficial.
"We know exactly how Bruce will fit into our team on the field, and just as importantly into our locker room," Quinn said. "He will add to our rotation along the defensive line, while adding to our pass rush. He is familiar with our scheme and we are familiar with his strengths, so we are looking forward to getting him on the field as soon as possible."
The Falcons need oomph on defense after being decimated by injury early in the season. Atlanta has long lacked consistent pressure from the edge.
Irvin can help provide that pressure after an eight-sack season a year ago. However, he's struggled with his own consistency this season. Motivation also seemed an issue while playing for the wayward Raiders. He compiled just six tackles and three sacks before being cut.
He should be plenty motivated heading home to Atlanta to play for Quinn.
If true, eschewing a chance to play for a division leader to join for the 4-4 Falcons is an interesting decision for the aging Irvin. Atlanta, however, isn't out of the playoff picture despite a 1-4 start to the season.
After the disastrous start to the season, most left the Falcons for dead. Quinn's team has battled back to put itself in the Wild Card discussion.
Adding Irvin is another sign Atlanta's season isn't over yet.