It will only default as far as runner up. If we make the final then we will probably be guaranteed unless we are playing a team outside the top 6. If both finalists already qualify through the league if league cup, then the cup spot will be passed to the league - more than likely Newcastle. This is why we MUST make the final! Not only qualify ourselves but stop Newcastle from doing so.
Life is like a jar of Jalapenos. What you do today might burn your ass tomorrow.