The market is likely to consolidate further with a negative bias in the coming sessions. The crucial support to watch out for would be 21,500 on the Nifty 50, while 21,800-21,850 is expected to be the hurdle on the higher side, experts said, adding that unless and until the index gives strong close above the hurdle, the much-awaited 22,000 mark is unlikely. On January 2, the BSE Sensex was down.