Carroll didn't offer much information on Harvin's return in recent weeks, going so far to sound pessimistic about the chances he could play. Reports Sunday indicated Harvin would be placed on injured reserve with a hip injury he underwent surgery for earlier in the year.
Harvin's return to the Seahawks comes at a perfect time, provided he's able to start. The Seahawks will host the winner between the New Orleans Saints and Philadelphia Eagles on Jan. 11, and could use another weapon for quarterback Russell Wilson.
Seattle acquired Harvin via trade prior to the 2013 NFL draft. They gave their first-round pick to the Minnesota Vikings for the fifth-year receiver in the hopes he would get the team's offense over the top this season.