It makes a lot of sense when you look at the ducks RHD depth. Manson is a good number 3 defender looking to bounce back. Beside that they have young unproven guys( not sure on what side they play) in guhle, Larsson, Mahura. Faulk though not a top pairing guy is a competent 3/4 defender with offensive tools that can help carry a PP.
Faulk is a good get for the ducks.
A conditional 1st( based on either the ducks making the playoffs, or Faulk re-signing with the ducks, becomes a 2nd if condition not met) and a prospect should be fair.