By Michael Pina The two-way role player who’s under contract through 2025, in his prime and already familiar with the offensive system head coach Ime Udoka has implemented in Boston. As a standalone transaction, the suddenly dangerous Celtics acquired Derrick White, a malleable two-way role player who’s under contract through 2025, in his prime and already familiar with the offensive system head coach Ime Udoka has implemented in Boston. With Josh Richardson, Romeo Langford (who couldn’t quite crack Udoka’s rotation) and a top-four protected first-round pick heading out the door, it’s a talent…