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Andre Caldwell, 28, would be a younger version of Jerricho Cotchery.
The 31-year-old Cotchery is in the final year of his contract.
If 2013 third-round draft pick Markus Wheaton earns the No. 3 receiver spot, Caldwell would seamlessly take over for Cotchery as the No. 4 receiver. At 6'0", 200 pounds, Caldwell is just about the same size as Cotchery.
If Wheaton doesn't develop as quickly as the Steelers hope, they'll need to fortify their receiving corps through free agency, especially with Emmanuel Sanders unsigned beyond this season.
While Peyton Manning has been putting up video-game-type numbers this season, Caldwell has been lost in the shuffle behind Demaryius Thomas, Wes Welker and Eric Decker. Caldwell has just four receptions over the past two seasons.
There was a time, however, when Caldwell was a productive receiver. He caught 51 passes to help the Cincinnati Bengals win the AFC North in 2009. Then in 2011, he caught 37 passes as the Bengals reached the playoffs.
Caldwell would be a bargain for the Steelers if he can return to his pre-Denver form.