Vegas is reportedly interested in Martinez, but they are division rivals. Asking price is a second and a B-/C+ prospect. Ben Jones has the potential to be a decent middle-six forward, an absolute steal of a 7th round pick. NHLe projects him to either be a second-line forward, or a great third-line scorer. Layton Ahac is there because of the premium needed to trade with a division rival, and the small bit of retained salary. It is only 1.92M for a year and a half, and let's be honest, the Kings won't be contending for a while, so it's okay for them to retain. Layton Ahac projects to be a bottom-four defenseman, but if he works on his skating, he can easily be a top-four defenceman.

Cap dump. Sens will take more picks for taking on some cap from other teams. Also only one year left so won't hurt the Sens at all.