It makes sense, but it’s sort of a new kind of Kinyan. If I understand correctly, you’re saying that there is a Gomar Umakne, being that you know that the bank will give it to him. Perhaps you can apply Dina Demalchusa that considers this a done deal.
1: Naasis is NOT Gamar U’Makni, it is a presumption that your intent is as such at the time you gave it to the bank (which is not far fetched)
2: Dina D’Malchusa between two yidden (employee & employer) opens up its own can of worms (although the bank has its own regulations to which DD will apply). Could work.
Wolf: Baruch T’hiye