Percy Harvin #12 of the Minnesota Vikings takes the opening kickoff for a touch down as John Wendling #29 of the Detroit Lions chases at Ford Field on September 30, 2012 in Detroit, Michigan. (Photo by Leon Halip/Getty Images)

by Curtis Crabtree
KJR reporter
Twitter: @Curtis_Crabtree

RENTON - WR Percy Harvin took another step toward making his debut for the Seattle Seahawks on Monday.

Harvin was activated from the physically unable to peform list while the team released DT Michael Brooks.

It's been 12 months since Harvin last appeared in an NFL game. He injured his ankle and was lost for the season in a game against the Seahawks last November while a member of the Minnesota Vikings. Now Harvin has a chance to make his Seattle debut against his former team this Sunday.

"He'll be going after it this week and see how far we can take it," head coach Pete Carroll said. "If everything works out well, he'll practice Wednesday and we'll start the process."

However, Harvin's activation from the PUP list doesn't mean he will play this week. Harvin had three weeks where he could practice with the team while still not on the 53-man roster. That window expired Monday and Harvin had to be placed on the active roster by Tuesday or would be placed on injured reserve and lost for the season.

It was a move that had to happen for Harvin to play this season. The fact that the Seahawks made the move means they are confident he will be ready at some point. It just isn't necessarily this Sunday.

"He's got to practice every day and show that all that he's done and the rehab work has paid off and that he can sustain through each day," Carroll said. "It's really the next day that we always look at. He makes his day and then how does he feel the next day. We'll just see how that goes. For us, it's not a pressured decision. We're going to try again to really consider all the factors and make sure we're doing this right and make a real good choice as we get our information."

Browner's Injury "Substantial":

CB Brandon Browner left Sunday's game against the Atlanta Falcons in the second quarter after injuring his groin. Carroll said Monday the injury is "substantial" and they won't know the full diagnosis for a few more days.

"It looks pretty serious," Carroll said. "We'll know more later in the week. He's got a substantial groin issue here and we've got to figure it out."

Carroll wouldn't rule out the injury could be season-ending for Browner and said they need more time to determine that.

CB Walter Thurmond will continue to serve as the replacement for Browner in the starting lineup. With Browner absent in the past, Seattle has moved Thurmond inside to the slot in nickel groupings with CB Byron Maxwell replacing Thurmond outside.

If Browner's injury is season-ending, look for Seattle to activate CB Deshawn Shead from the practice squad if they need additional cornerback depth.

Shead is making a full roster salary despite being on the practice squad. Minimum salary for a practice squad player is $102,000 a season and $6,000 a week. Shead is getting paid $480,000 for the year and getting $28,235 a week. The boost in salary shows a commitment from the team to keep Shead around for this very occasion.

Fifth-round pick CB Tharold Simon remains on the physically unable to perform list but isn't a viable option for Seattle. He hasn't practiced with the full team once since being drafted in April. He participated in two rookie mini-camp practices and has been sidelined ever since with a foot injury.