Sources - Steelers eye WRs as NFL trade deadline approaches - ESPN

On top of the flurry of wide receiver trades that the NFL already has seen in recent weeks, there was one more in the making.

The Steelers were in the process of trying to get a deal done for Christian Kirk, and league sources told ESPN there was a reasonable chance that the Jaguars wide receiver was going to wind up in Pittsburgh until he broke his collarbone last Sunday.

Pittsburgh's hope of upgrading its receiving corps was derailed, at least temporarily. But the Steelers are not giving up, a league source told ESPN.

The Steelers have been making calls and checking on any and all available wide receivers before Tuesday's 4 p.m. ET trade deadline, including the Jets' Mike Williams and the Panthers' Adam Thielen, according to league sources.

The Steelers will continue pushing in an attempt to improve by the deadline, but they are far from the only team looking to better position themselves for the second half of the season.

• The Lions continue making calls about pass rushers, and have spoken to the Browns about former Pro Bowl defensive end Za'Darius Smith, who already has played in the NFC North for both the Packers and Vikings, according to sources.

• The Falcons also have been aggressive about making pass rush calls, and are expected to purse a potential deal for Giants edge rusher Azeez Ojulari, according to sources.

The surprising Cardinals, tied for first place in the NFC West entering Sunday, also are exploring the acquisition of pass rushers such as Ojulari.

• Another pass rusher who could be available is Calais Campbell, whom the Dolphins have received inquiries about, according to league sources.

If the Dolphins don't win Sunday in Buffalo, they could be more open to dealing Campbell to a contending team,