You sounds like a used car salesman. The truth is not all cars are built with the same kind of reliability, and not all baseball players come with bodies with the same kind of durability. You can reliably predict that players like Kevin Kiermaier are going to suffer some sort of injury during a season which forces them to miss time so it is indeed possible to predict injury in certain players.
Jansen has made 3 separate trips to the injured list in the last two seasons due to soft tissue injuries. It's been said that in baseball the best predictor of future injury is prior injuries, particularly in the most recent season. Jansen has far from a spotless injury history and is the oldest of the three, so I'll go ahead and predict he is the most likely of the three to miss time due to injury.