The 49ers signed Jenkins to the practice squad Monday.
The Titans are releasing Jenkins on Tuesday, Adam Schefter of ESPN reports.
Jenkins doesn't have an injury designation for Saturday's divisional-round matchup against Cincinnati, Jim Wyatt of the Titans' official site reports.
Jenkins (ankle) did not practice Wednesday, Jim Wyatt of the Titans' official site reports.
Jenkins (ankle) doesn't have an injury designation for Sunday's game against the Dolphins, Jim Wyatt of the Titans' official site reports.
Jenkins (ankle) has been ruled out for Sunday's contest against the Steelers, Jim Wyatt of the Titans' official site reports.
Jenkins (ankle) has been ruled out for Sunday's game against the Jaguars, Turron Davenport of ESPN reports.
Jenkins' (ankle) X-rays came back negative, but he does have a sprain that will likely cause him to miss some time, Ian Rapoport of NFL Network reports.
Jenkins (chest) does not bear an injury designation for Sunday's game against the Patriots, Jim Wyatt of the Titans' official site reports.
Jenkins (chest) is inactive for Sunday's matchup against the Texans.