About 3 months ago I emailed a professor asking if there were any postdoc positions open in his lab. The professor emailed back relatively quickly and thanked me for being interested in his lab, but that currently there were no openings available. However, he was waiting to hear back at the end of the year from some funding he had applied for, and that he would keep me posted.
I haven't heard back from him, yet. I understand he's probably busy or maybe forgotten about me, which is why I wanted to email him again and follow-up. I don't know what to say. Mostly because I'm afraid that if he didn't get funded, maybe my email will be like rubbing salt to his wounds. I guess I won't know until I email again. Therefore, what would be the best approach?