For now, I think the price of BTC is unable to return to 20,000 US dollars, because the sharp drop in BTC prices, which has hit the confidence of investors, it will take a long time to recover. But I think in March 2018 may be close to 20,000 US dollars price.
I will wait for the good come back of bitcoin this year. I hope that this March 2018 is the good one and finally reach again at $20,000.