Steelers rookie RB Kaleb Johnson enters the Jaylen Warren chat in Pittsburgh

The Pittsburgh Steelers let Najee Harris leave in free agency to the Chargers.

Then, they drafted his likely replacement, Kaleb Johnson out of Iowa.

Now that training camp is here, it's time to see how it all plays out.

The Steelers have shifty incumbent Jaylen Warren, along with free agent signee Kenneth Gainwell from the Eagles. And then there's Johnson.

"The third-round running back figures to step into a pretty significant role as a rookie following the departure of Najee Harris in free agency," ESPN's Brooke Pryor writes. "Though Jaylen Warren is the veteran in the room, Johnson is a bigger, more physical running back that can complement Warren's slippery speed. The two continue figuring out roles and snap distribution during camp. I'll be especially watching Johnson during Mike Tomlin's favorite backs-on-backers blocking drill as he goes up against the team's linebackers."

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Warren's supporters have wanted him to get a bigger workload for a couple years, and this seemed like his chance.

But Johnson has the chance to be a standout back in his own way.

It looks like it might wind up being a two-headed RB monster again in Pittsburgh.

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