The veteran underwent successful surgery Friday, but the damage in his shoulder was more extensive than previously thought, according to ESPN's Adam Schefter.
Osemele's camp and the NFLPA are now considering taking specific action against the Jets' team doctor for violating state medical board regulations, added Schefter.
His release marks the latest chapter in Osemele's clash with the Jets over the severity of his shoulder ailment. It initially seemed as though the 30-year-old would remain on good terms with the team, but those sentiments quickly evaporated.
The Jets had levied daily maximum fines against the eight-year veteran since Oct. 19 for conduct detrimental to the team, costing him nearly $580,000 by the time of his release, according to SNY's Ralph Vacchiano.
Osemele has already filed a grievance over the fines, reports New York Daily News' Manish Mehta.