beniers has more value than a year of marner.

All that and still post a full lineup without seven Dmen.

Seattle isn't trading Beniers rights or a 1st round pick. They need center depth way more than winger depth. Marner may be a great talent but for one year of service that's not really worth it for the organization. They'll keep Beniers for half the cost and try to fill in winger scoring through FA or prospects.