The biggest name to fall into this category is Danny Jansen. The former Blue Jays has struggled to find a consistent since being traded to the
Red Sox at the deadline last year. After signing a one year with the
Tampa Bay Rays and subsequently being traded to the
Brewers, he finds himself available to all teams this winter. While health has always been an issue for Jansen, he could definitely serve as a power-hitting backup catcher for several teams.