I think Rykov looks at the left side of the Rangers and thinks--'wow, there are vets who could block me'. But anyway I think he needed to get into the mix as soon as possible because K'Andre and Tarmo might be coming next year and I think he risked getting moved along again because of too many numbers.
Left D is stacked as it is--Skjei, Staal, Smith, maybe Claesson (if we sign him again), Hajek, Rykov, Lindgren, Bigras could all legitimately play next year. To me I'd guess it points to Smith getting bought out (because we won't find a trade partner) and Claesson not being signed.