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Baltimore signed Huff last offseason to help mitigate the loss of Ed Reed, but he simply didn't pan out.
The former Raiders, Ravens and Broncos safety is a shell of his former self, but he could provide some veteran leadership and contribution as a backup for a low price.
The man on the other side of the "Fail Mary" has done little to merit a substantial contract since then.
Young played well in a backup role in Oakland last season. He was actually the 12th-best rated safety in 2012 with the Cleveland Browns, per Pro Football Focus (subscription required).
Reed still has at least one believer in New York Jets head coach Rex Ryan. Actually, his former coach, John Harbaugh of the Baltimore Ravens, has similar sentiments, per NJ.com's Dom Consentino.
At 36 and obviously on the downturn, physically, it's difficult to see many teams chomping at the bit to sign him.
Allen had a decent season in Pittsburgh playing behind Ryan Clark last season, even grading positively over at PFF in limited duty. The 10-year veteran could be a valuable depth signing for many teams.
Speaking of Clark, the 12-year veteran might be getting a bit long in the tooth. At 34, Clark has said he's not ready for retirement, per ESPN.com's Scott Brown. His body might be saying otherwise.