The Pittsburgh Steelers' defense could be receiving some major reinforcements ahead of a crucial Week 10 matchup on Sunday Night Football against the Cincinnati Bengals.

Head coach Mike McCarthy told reporters that the Steelers are opening the 21-day practice window for defensive tackle Derrick Harmon (foot), who is currently on the reserve/injured list.

It's not necessarily a guarantee that Harmon will be activated off of IR in time to play the Bengals, though it's certainly a huge step in the right direction and would signal that there's at least a solid chance that he'll return to the 53-man roster in the coming days.

Harmon was placed on IR after suffering his foot injury in the first half of Pittsburgh's Week 4 loss to the Cleveland Browns on Thursday Night Football.

The 2025 first-round pick has missed the required minimum of four contests while on IR, meaning he is eligible to be activated from IR at any time.

Before going down with his injury, Harmon had recorded 12 total tackles and 1.5 sacks. He also has a forced fumble, which came at the end of the fourth quarter vs. Cincinnati in Week 3 on a sack of Joe Burrow and clinched a 30-27 victory for the Steelers.