A former first-round draft pick from Mississippi, Oher started every game over five seasons with the Ravens.
Oher, 28, signed a five-year, $20 million contract as a free agent last year with the Titans.
A native of Memphis, Tenn., Oher was released after the season with a waived-injured designation. According to a source, Oher is nearly completely healthy now.
Oher was paid $6 million by the Titans this past season. If he had remained on their roster, $3.35 million of Oher's scheduled $4 million base salary for 2015 would have been guaranteed.
Oher started the first 11 games at right tackle for the Titans before being placed on injured reserve with a toe injury. Oher didn't draw high grades with the Titans, but started all 80 games in five seasons with the Ravens. He played his best football played during their Super Bowl XLVII championship run.
Oher drew high marks for toughness and durability, but had a tendency to draw penalties, especially early in his career.
The Ravens replaced Oher with Rick Wagner, who emerged as one of the top right tackles in the NFL last season as he allowed just two sacks.