I can't see it to be honest, I can't see them getting fewer than 13 points from their 17 remaining games. They've only lost twice at home this season (soon to be thrice) and have 8 or 9 home games left. I can't see Wolves, Wigan and Villa all outscoring them by 4+ points in the second half of the season.
Next year might be a different story though. There will be an exodus in the summer, and yes this will generate transfer funds, but how well will they be spent? If they bring in a few more Maxi Rodriguez's, and Henry keeps focussing on "youth policy" as he has said, then it could be a long struggle for them.