I haven't seen a post about this this application cycle, so I thought I'd check to see if anyone else is dealing with something similar. I am declining an offer to my top choice because of lack of funding, and I would like to let the department chair know since he has been very encouraging and helpful so far when I contacted him about it (also, I might apply again and want him to remember me in a positive light). Yet, I'm unsure how to phrase it in a diplomatic way. I want him to know why I'm turning down the offer, but would it appear passive aggressive to tell him its because I wasn't offered enough funding? Any advice is appreciated.