Which teams are impacted most by the expansion draft?

If the Penguins don't make any trades, they risk losing either Matt Murray, left, or Marc-Andre Fleury in the expansion draft. Gregg Forwerck/NHLI via Getty Images

The rules for the NHL expansion draft on June 21 are of interest not only to the Vegas Golden Knights, but to every front office.

Based on some of the finer points, some teams will need to make a few trade deadline moves, or call up some depth-liners to play a few games to be in compliance with the rules and/or to avoid exposing a player to the Golden Knights that they'd rather not lose.

Let's take a look at five key rules, including what each of them could mean for various teams, and for the overall expansion draft strategy of the Vegas Golden Knights.