Dear (Name of the person),
I am so grateful for the opportunity you are offering me but I regret to inform you that I cannot accept your offer because I think joining your company with the same position which I am having presently will not bring growth in my career. I am looking for a job where I have bigger responsibilities, more challenging projects, and capacity development. and I’m sorry to say that I don’t think that this job will allow me to meet bigger clients and also I cannot expand my skills. This time I really want to lead the team on important projects. I want to take growth which is not possible if I agree to join this time.
I know that you are offering me a better salary but I am really not interested in a hike but this time I will go for growth because I am already satisfied with my current salary and increment in my salary doesn’t matter for me.
if going for a new job doesn’t offer me new opportunities and chances then definitely I will end up getting bored in a few months. I really don’t want to go for a job in which I will be stuck in my comfort zone and cannot push myself to achieve higher goals. I hope that you will move forward and search for colleagues who have the potential to get fit in your job.