Seattle has swapped a late-round draft pick for Broncos wide receiver Keary Colbert, FOXSports.com has learned.

The Seahawks — who had the 17th best pass offense in the league a year ago — have suffered greatly this year with the losses of receivers Nate Burleson, Bobby Engram and Deion Branch to injuries.

Colbert was in his first year with Denver after four seasons with the Panthers. He has 109 career receptions and seven touchdowns, though he has not found the end zone since 2005.

The Seahawks also reacquired Koren Robinson Tuesday, bringing back a player that they had released in 2005 because of repeated problems with alcohol. Robinson could immediately be inserted into the starting lineup for this week's game against St. Louis.

"Just because of the terms and circumstances I left Seattle on, I never thought I'd be back," Robinson said. "I'm grateful for this chance. I think it can be a good story — for me and the team."

The Associated Press contributed to this report.