Allen attended Corcoran High School in his hometown of Syracuse, New York, where he excelled in football and track.

He only played two years of varsity football, both at cornerback, but he managed to collect a career total of 17 interceptions, including a school-record 11 as a senior.

Opting to remain in his hometown, Allen accepted an athletic scholarship to play football for the Syracuse University Orangemen.

[3] After the 2005 season, the Giants opted to sign free agent Sam Madison rather than re-sign Allen to a new contract.

As of Week 17 of the 2008 NFL season, Allen recorded three interceptions, the second of which he returned for what would be his first career defensive touchdown in a win by the Dolphins over the Denver Broncos.

Allen was arrested February 20, 2010 and charged with driving under the influence when he was stopped in a late-model Ferrari at 3:30 a.m. at the corner of Fifth Street and Alton Road, said Miami Beach police spokesman Detective Juan Sanchez.

The 11-year veteran has battled injury problems of late, and should be the team's nickel back behind Vontae Davis and Sean Smith.

[10] He and his partner Susan Daub pleaded guilty to federal fraud, conspiracy, and money laundering charges.