Wiillson Contreras' development and implementation into the majors could work out well with the Cubs roster. Assuming he gets called up at some point in the second half, it just helps expose him to the major league experience and lifestyle. Next season with Ross retired, Montero and Contreras are your catchers. Contreras can develop with a full season under Montero's leadership. Playing time can fluctuate depending on Contreras' performance and team needs.