Advocate staff photo by ELIOT KAMENITZ-- New Orleans Saints cornerback Jabari Greer (33) waves to the crowd's applause as he is carted off the field with and injured left leg while playing San Fancisco 49ers at the Mercedes-Benz Superdome in New Orleans, La. Sunday, Nov. 17, 2013.

A day after Saints cornerback Jabari Greer sustained what his coach called a "significant" knee injury, New Orleans has agreed to sign free-agent cornerback Trevin Wade, a former 2012 seventh-round draft pick by the Cleveland Browns, Wade and his agent said via Twitter on Monday.

There were no official Saints (8-2) transactions on the NFL wire Monday, and the team hasn't confirmed anything about Wade. But the player's agent, Michael Hoffman, confirmed to The Advocate in an e-mail that Wade has been signed to the 53-man active roster.

Hoffman, who represents Wade and goes by @MRHoffy on Twitter, broke the news Monday when he wrote on the social media platform, "Congrats to (Wade), the newest member of the Saints." He attached the hash tags "hard work" and "new beginnings."

Saints fans then flooded the player's verified Twitter account, @TwoStarWade, with messages welcoming him to New Orleans. Wade subsequently tweeted, in part, "Really appreciate all the love... . Ready to play my role and add to the team success."

Wade, out of Arizona, suited up in 13 games for Cleveland and recorded 17 tackles in his rookie year. The Browns drafted cornerback Leon McFadden this offseason and signed CB Christopher Owens in free agency, and Wade was waived in August after hurting his shoulder.

Coincidentally, the Browns waived Wade to make room for rookie linebacker Eric Martin, whom the Saints had cut.

As for Greer, he badly hurt himself while defending a deep, third-down pass to wide receiver Jon Baldwin midway through the first quarter of the Saints' 23-20 victory over the San Francisco 49ers (6-4) on Sunday. Greer leapt up and stretched out to bat the pass away with his left hand, and he landed with all of his weight on his left leg.

Greer apparently hyperextended that knee and then rolled his ankle after hitting the turf. He immediately fell and clutched at his left knee.

Athletic trainers immobilized Greer's leg with an air cast and helped him onto the back of a cart. As he was driven away from the field, Greer pointed a finger at his Saints colleagues and waved at the crowd of more than 73,000 people packing the Mercedes-Benz Superdome, who cheered for him loudly.

The evocative scene was faintly reminiscent of one cornerback Patrick Robinson experienced when he hurt his knee and was carted off in a Week 2 win at Tampa Bay. The Saints placed Robinson on season-ending injured reserve three days later.

Coach Sean Payton on Monday morning declined to say what his plan for Greer is. But the announcement Wade and his agent made later in the day don't make Greer's prospects of returning this year seem promising.

Greer has been a fixture in New Orleans' defensive secondary ever since joining the Saints in 2009 after spending his first six seasons in the NFL with Buffalo. He's appeared in 63 regular-season games for the Saints and started all but three of them, breaking up 69 passes, intercepting nine and having a hand in the capture of Super Bowl XLIV.

He's missed 11 games for the Black and Gold -- two in 2012 (concussion, sports hernia); two in '10 (shoulder); and seven in '09 (groin).

This season, Greer leads the team with 12 pass break-ups, and he had a pick in the Week 4 win at home against the Miami Dolphins.

Cornerbacks on the Saints' depth chart under Greer and fellow starter Keenan Lewis are second-year man Corey White, nine-year veteran Chris Carr and undrafted rookie cornerback Rod Sweeting.

White and Carr this year have rotated in on defense and played special teams for the Saints. Sweeting, inactive in seven contests, has only played on special teams in the three games for which he's dressed out.