Castro is a free agent after this season. The Twins can sign him if they want him back. He is a talented and versatile player that a team could use before and during the playoffs.
Bader had a very good year in 2021 for St Louis and is having a good one this year. But otherwise Bader has been a part-timer with a good glove and a below-mediocre to worse bat - trade!
Martin and Keirsey can play CF if Buxton goes down.
Since so many teams are eligible for the post-season, I expect France, Paddack, Castro, Bader and Coulombe are likely to net decent prospects in return. Of course, the Twins shouldn’t take bad offers, But at least expect good but belowTop 100 prospect level. The market will be good.
Duran or Jax should net a high level prospect, and should be considered for a trade.
Granted,if the Twins turn this 3 game winning streak into a 6 game streak, they move out of the Seller’s market.