The OF and Starting Rotation is actually pretty solid. The areas of concern are the IF and bullpen.
for the pen, I can see the Twins signing a reliever to a major league contract and signing two or three to a minor league deal for depth and competition.
In the IF the concerns are mostly SS and 1B. The Twins can sign a low cost 1B like Hoskins or bring in an OF like Larnarch or Wallner as the OF will go through a youth movement due to the skill level of their three prospects in AAA ERod, Gonzales and Jenkins. Larnarch and Wallner will start the season with the Twins, I can see them trading Larnarch especially if they sign Hoskins.
On the IF the Twins are giving Lewis a last shot to reclaim his future at 3B and Lee as an IF as well. Culpepper will be ready at some point next season. Or atleast we hope.
I hope the Twins keep both starting pitchers but with a strong enough offer, I can see the a trade.
2026 is a rebuilding year with a likely goal of .500 and a small chance of competing if enough goes right. Most likely a 70-75 win team is my expectation as the Twins set up to be competitive in 2027.