The Seahawks don’t view Earl Thomas as untouchable, but any team looking to acquire him will have to give up a lot of draft capital, Mike Garafolo of NFL.com hears (video link). Garafolo likens the Seahawks’ view on Thomas to the team’s stance on Richard Sherman trade talk in 2017. The team did not shoo away suitors, but instead asked for a first- and third-round pick for him. Ultimately, no one met that asking price. 
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The same can’t be said for Sherman in 2018. The Seahawks are willing to move the cornerback and, at this juncture, they’ll take “whatever they can get for him,” Garafolo hears. While Sherman still performed reasonably well in his injury-shortened season, teams are not eager to pick up his $11MM contract. If the Seahawks cannot find a suitable trade and Sherman does not agree to a pay cut, it seems likely that he’ll be released outright. Other teams are well aware of that and, therefore, are willing to wait things out and see if they can instead sign Sherman as a free agent. Sherman’s health status is also a barrier to a potential trade.
Bob Condotta of The Seattle Times first reported that the Seahawks are seeking a first-round pick in addition to a mid-round selection for Thomas. The safety is set to carry a $10.4MM charge this season and may look for a deal worth $13MM per year beyond his current contract.
You aren’t getting a 1st and 3rd for ET either.
Maybe a 2&4. From someone like the cowboys or Texans
With the cost of paying Thomas the draft compensation would be minimal…3rd or 4th at best.
Well they could get a 3rd as a comp pick just for letting him walk. The deal has to make sense in Seattle’s part too
A second and another mid round pick makes more sense. I could see a team giving up just their late first round pick if Seattle was willing to take it.