Quoting: Rangsey
They don't have to protect McDonagh. The might lose Foote.
Also, the logic "don't wanna lose them for nothing/cheap" doesn't really hold water because now (in this scenario) not only is Tampa down a player they lost for nothing they're down a player the lost well below value.
So team with multiple good assets available to Seattle are probably more likely to just take the hit and only lose one player from their lineup.
Ya it really only makes sense to trade a player rather than lose them for nothing if there is a huge dropoff from that player and the next player that would be taken.
For example: (for the sake of this example let's pretend Logan Stanley wasn't eligible) Winnipeg would protect Morrisey, Demelo, Pionk, Schiefle, Ehlers, Dubois, Wheeler, Lowry, Copp, Connor.
This would leave Appleton exposed. The next best player would be like Nathan Beaulieu maybe? In a situation like that it would make sense to move Appleton for assets.
Now of course Stanley is eligible so this wouldn't make sense in reality as then they lose both Appleton and Stanley