Filtered out the above teams:
Filtering out teams who wouldn't want to rock their CF boat: Astros, Twins, Orioles, Marlins, Phillies, Braves
Filtering out cash-strapped teams: Tigers (above lux. tax), Rangers (175/195 toward lux tax), Giants (172/195 toward lux tax)
and we're left with Seattle competing with the: Athletics, Indians, White Sox, Nationals, Mets, Cardinals, and Rockies.
Ben Badler leans toward the White Sox here back in March. Quoth,
"...most other teams are unofficially out of the mix because they have millions of dollars committed to players who will sign on July 2 in the 2017-18 signing period. If one of those clubs were to sign Robert before June 15 and blow past its bonus pool, that team wouldn’t be able to sign anyone for more than $300,000 in 2017-18. They can’t sign Robert without those commitments evaporating. And if for some reason Robert isn’t cleared until after June 15, those teams have already tied up a huge chunk of their pool space anyway."
Does anybody know if the Mariners are committed to any players who will need to sign on July 2?