With Weber, reacquiring him would probably make a lot of sense for Nashville.
If he retires this summer, the cap recapture for the Preds will be $6.1 million for the next 4 seasons, and there's no way they can work around that.
https://twitter.com/user/status/1415464565777715202
If they reacquire him and he LTIRetires, they would have to carry his full cap hit for the next 4 seasons, but could work-around it with LTIR space. In terms of real dollars, he's set to be paid $3 million next season and $1 million for each of the next 3 seasons, so it's not a huge expense for them (especially with escrow taken into account).
They could even buy him out, but the cap hit on that would be almost as much as his full salary and wouldn't be able to be worked-around either.