A good boss won’t have problems with that - they are always looking for their next position anyway and having a replacement ready to go is good - if you can’t be replaced you can’t be promoted. A good boss will help your get involved with the politics needed to be good at this. A good boss will put your name up for leads in a different department where there is an opening that you wouldn’t even know about.
Note that I said good boss above. Not all bosses are good.








I had a few cousins who took and finished all my grandma’s unfinished quilts. They were already into quilting though. YMMV, but it is a good example - if there is someone who can understand/take this over give it to them.