Career Transition is only a part of career management.
Moreover, the Career Transition Manager, going by this title, needs not worry about other aspects of career management.
Does it sound practical to have an exclusive manager for career transition? What will be his Job Description and what will he be doing 8 hours a day for career transition? Probably, if you appoint a person as Manager - Career Transition, it will be really a career transition for himself, because this guy will keep wondering what work he will do for the career transition of other employees. Ultimately, he may step into a career crisis needing someone else for managing his own career transition? I hope this is not what is expected from the Career Transition Manager.
Then, why not Manager - Career Plateau? Manager - Career Crisis? Manager - Early Career Issues? Manager - Midlife Career Issues? Manager - Late Career Issues? Manager - End of Career?
Career Management - managing the different issues at various stages - is a responsibilty with its most part lying on the individual. The company can only provide some help through training or counseling and such efforts.
The individual's career transition is also influenced by the organization's transition and its growth or any changes. How can the Career Transition Manager really do anything tangible given the number of internal, external factors and individual's understanding of the issue?
I think in the process of finding fancy job titles, one should not forget the purpose.
Govardhan