Perhaps bitcoin will dip into $4000 by the end of year.
I don't believe that it will dip into $4,000. It will only stay above $5,000 at the last quarter of this year. Around November or December, it will start to rise up again. Let's hope that the manipulation of Bitcoin will stop, there are some people always telling that there is manipulation happening now. 
Its not a manipulation as they say. Its obvious that we are in a bear market right now due to the fact that the percentage of involvement now as opposed to that in December 2017 decreased by many folds.
The RSI and bearish divergence proves that.
Until and unless we reverse this trend we are and will be going down and might even break the last resistance for a while.