The obvious and likely best option for UConn is to convince either Luke Murray or Kimani Young (or ideally both) to stay in Storrs. Alex Karaban has previously mentioned that he feels like he has three head coaches at UConn with Hurley, Murray, and Young. Promoting internally would help keep the roster intact and allow them to genuinely compete for a third straight title.
However, if Hurley departs for the Lakers, he might take some of his staff with him. It’s uncertain whether Murray or Young would leave a potential head coaching position for the unstable role of an assistant in professional sports. If UConn loses all three of their top coaches to the Lakers, that’ll decimate the program and I’m guessing most players would transfer, regardless of who the new coach is.