Below is from the Collins Cobuild Dictionary. 'Any' can take a singular or plural noun depending on context.
You use any in statements with negative meaning to indicate that no thing or person of a particular type exists, is present, or is involved in a situation. I never make any big decisions... We are doing this all without any support from the hospital.
Hi guys, With regard to I need to know if any of you is an expert, I suggest that we often avoid any perceived awkwardness by paraphrasing, egI need to know if anyonehere is an expert.