According to The Ringer, multiple league sources have indicated that unrestricted free agent point guard Ricky Rubio is a target of the Indiana Pacers. Point guards Darren Collision and Cory Joseph are both unrestricted free agents, so Rubio could immediately step in and fill that void.
Finding a suitable replacement to start at the 1 in this draft seems unlikely, so this need will have to be addressed in free agency or the trade market. His defensive ability and playmaking prowess is not only an upgrade from both Collision and Joseph, but would also seemingly fit well with Victor Oladipo.