I would appreciate very much an advice on the case which I will describe after a short intro about myself. Such introduction is not really necessary for the matter of question, but I hope it can better explain my situation.
I am PostDoc working in the field of one of the nature sciences in one of German Universities (I apologise for being so cryptic). It is my second postdoc position and I am doing science for about ten years. I moderately rate my achievements although I have several publications in high rank journals and currently my Hirsch index is 10.
Around three year ago I wrote a project for the German Research Foundation and was granted finances for one PhD student. Before submitting a project I discussed the matter with my prof. He was not against such project, but not very encouraging either.
After the project was granted I was first surprised that my boss used all possible kinds of arguments to prevent me of publicly advertising the position. After almost nine month of indeterminacy he suggested me to overtake one of our master students on this position. After all, it was not a bad decision because the student has already worked with me and we had a good experience of collaboration.
Currently, my biggest problem is that by boss interfere in all possible ways with our scientific work. He constantly tries to involve the student in other scientific projects. I would completely understand such approach if we were failing in some respect. On contrary, we regularly produce high rank papers, where my boss naturally is the last “courtesy author”. I spend sufficiently large time working with the student having 4-6 hours of weekly discussions.
One might say the situation is favourable to me. However, as scientist aiming at permanent position I am concerned with development of my own way in science, and working exactly according to the plan of the research project suits this aim. Therefore, I openly talked to my boss to get little bit more scientific independence. I was surprised to hear that "extra projects are in the interests of the student's scientific career". I am failing to see how this can be the case... (jumping from topic to topic?)
I need you advice how to deal with this kind of situation. Of course, I do not want to make strong steps because after working for so many years with my boss I heavily depend on him in e.g. searching for the next job.
Edits in response to comments
I am greatly surprised with the comments below which perceive everything from a very idealistic perspective:
Even though it might look selfish it is a post about my problem as a scientist trying to establish my way in science
I am also interested vey much in student being able to establish in science. Since the time for PhD is limited, in my view, involvement in too many problems, superficial approach is bad in a long time perspective
In the same way as time for PhD is limited same is true for Postdoc experience. Allowing the student to work on other projects also reduces the outcome of my project. In numerical terms it reduces the number of publications on the topic as I deny an opportunity to be a courtesy author. Which is never the case for my boss