That's just blatantly not true. Same size fan base as Coventry? I don't even know how to respond to that. Newcastle have fans all over the world, like we do, and they get 55,000 a week as it is.
They will attract a hell of a lot more fans now that they are shoe ins for European football and competing for trophies every year.
Coventry are a tiny tin pot club with several other larger clubs nearby. They aren't on the same planet as Newcastle, Villa, Leeds etc in terms of fan base.