The timeline just doesn't make sense for the Devils' 2024 #10 pick anyway. So it's going to be the (presumably lower, less valuable) 2025 1st pick from New Jersey that would be in play in any eventual Saros deal.
If it gets to that point where the Predators have decided they can't retain Saros (I doubt it will get to that, but *IF*)... then the 2025 1st + Holtz + goalie would be alright as a return. The Preds don't have goalies in the pipeline other than Askarov... Schmid or Daws coming back as a lesser piece in the deal would be useful for the Preds/Milwaukee.