The abnomal bull market that BTC have seen just right before the end of 2016 was quiet huge and unexpected. As mean-reversion shows, the derivative of the price in respect to time was going to high which requires a correction for sure.
Very Short-Term target price (1 week): 760-790 EUR/BTC
Short-Term target price (2-4 weeks) : 680-710 EUR/BTC
Mid-Term target price (2 months): 730 EUR/BTC