One 49ers roster move has Fred Warner putting the NFL on notice

Seattle Seahawks wide receiver Cooper Kupp recently joined Fred Warner on the Real Ones podcast, where the conversation turned to the San Francisco 49ers linebacker's reunion with Dre Greenlaw.

Greenlaw returns to the 49ers after a one-year stint with the Denver Broncos that didn't go as planned. Now back in Santa Clara, he and Warner are aiming to reestablish themselves as one of the NFL's premier linebacker duos.

Warner didn't shy away from the hype—and made it clear the rest of the league should take notice.

Kupp asked, "How awful are you guys going to be to the opposing team?"

Warner didn't hold back in his response.

"Yeah, no, it's bad, bro," Warner said. "It's bad for you, bad for old [Rams QB] Matthew [Stafford], bad for everybody going forward because you just know—it's different when you've got such a rapport and a connection with someone.

"Every single time I've played with Dre, for like the seven years that we played together, there's an unspoken language on the field, where I don't have to turn to him and be like, 'Hey Dre, look for this.' We're moving together in unison, and it was just so easy because we just had this great vibe with one another.

"It allows you to play even more free. Dre, he's one of the best athletes I've ever played with on a field, and just so ferocious and relentless in the way that he plays the game. You just love playing with guys like that, who just are willing to give it up."

Warner is coming off an injury-shortened season, appearing in just six games before suffering a dislocated and fractured right ankle.

The chemistry between Warner and Greenlaw was a cornerstone of the 49ers' defense. The team is counting on that familiarity to help elevate a unit that struggled with consistency last season.

San Francisco signed Greenlaw to a one-year, fully guaranteed $6 million deal, showing confidence that the duo can help restore the team's defensive identity.