Not a bad idea. Detroit might say no. Prince is a better fit than Jerebko, but he's debatably not enough to justify swapping a pick that will likely fall within the #9-12 or #15-17 range for a pick that will likely fall within the #20-25 range.
If Detroit feels it is a legitimate contender this year (not totally ridiculous to assert given their extended recent play), they'd consider this offer. But ultimately, I think they'd hang up the phone.