Out of curiosity, why not? Johansson is a versatile 200 ft player, Bowey has top pair upside and Samsonov puts another good young goalie in the system.
Today obviously Washington gets the better return, but I think it evens out at the very least down the road.
I'd make that deal if I was Lou, although I've been accused of underrating Nylander.
You answered your own question.