In this recent chapter of the Celtics, I think they're clearly prioritizing known commodities.
Most all of Ime's staff has ties to the Northwest, Brad got Horford back, Kanter back, and Theis back (as you mentioned), Brad acquired White (a former player of Udoka's), Brad acquired Richardson (a former player of Udoka's).
I don't know if it's normal per se, or if it's good or bad. But it's definitely a strategy that is being employed.