I have to say the Nigerian central bank took a wrong decision at this time. As far as I knew Nigeria was a potential country for bitcoin adaption since many citizens were already involved with Bitcoin. Now they banning bank accounts related to Bitcoin transactions which will lead to illegal use of Bitcoin. I don't think those peoples already involved with Bitcoin they can leave it. Same here in my country, central bank ban Bitcoin but citizens are using it illegally, as a result, the government losing accumulate taxes from them. The same thing will be happening in Nigeria, bitcoin users will find some way to trade their assets.