The former Oakland Raiders player joined the Super Bowl champions last week, having been released by the AFC West side earlier this month.
Speaking at a news conference, the Ravens general manager told reporters: "Rolando is just [being] given an opportunity to make our 53-man roster. That's it.
"I think the guys in the locker room will be able to provide him with the proper guidance as to the way [head coach] John [Harbaugh] wants his football players to be."
The 23-year-old's first three seasons in the league have been marred by off-the-field incidents, including several arrests for driving and firearms offences.