I just thought of this, and I want you to view it from your own perspective. As everyone hopes that more people get to believe and use bitcoins, I think bitcoins can gain more new users on a large scale if anyone (whales ) can place their advert through a popular football club just as some companies do sponsor football league. I think this will send a strong message to billions of people across the world who do know but does not embrace Bitcoin usage.
Let me site another example, let's take for instance, a club announces that they will pay their players in BTC. This news can also help people adopt BTC.
I don't really think we should do high advertising about Bitcoin because it is not a product from a company that is looking for buyers, and I don't see it as a company that needs much advertising everywhere before it continues to be succeeding, Bitcoin is digital currency which was created for as alternative to fiat currency. So I don't think it need that type of advertisement. I believe a lot of people are aware of the existence of Bitcoin at this point, but the main problem is that they are too lazy to do their own research and find out if it is something worth adopted,It is not that Bitcoin is not popular; it is so popular that on almost every social media site you find news about it or people discussing its price.
It is not that people are not adopting Bitcoin, but the truth is that the rate of adoption is not increasing as we were expecting, and all this has to do with government issues with Bitcoin. As we all know, many countries have not legalized Bitcoin, and even those people who want to adopt or volunteer themselves and raise awareness of Bitcoin are scared of the punishment they will face for going against the law of their country.