It’s possible Clifford DeVoe might be getting a switched identity, kind of similar to Adrian Chase’s role in Arrow Season 5, and that his typical lawyer background could be switched out for something more relevant to the TV show.
Sounds confusing, but also appropriate for a villain named The Thinker.
After all, somebody has to take that position, with all the crimes Central City deals with on a daily basis.
Like a new CSI agent to step in for Barry at CCPD, perhaps?