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 agree , but i think if this ''crash'' hurt your confidence in bitcoin you didn't know what you were getting in to. But bitcoin has gone from $1000+ tot $150 to go to 20k. So keep that in mind.