Manchester United rank in Premier League is not too bad and they can climb up more in rest of season. The season is long and they have enough time to do this task but with their very unstable performances and sometimes very bad, this task is not easy to achieve for Manchester United players.
Yes there sixth position on the premier League table is not too bad because the game is still far and the possibility of Manchester United to climb is still higher because I have seen other teams who are in number six on most table and latter club up because there improvement on performance.
So I believe that if Manchester United will seat up on there remaining matches by wining them there would be a higher chance for them to improve on the premier League table but however no matter how much they try they can never get to the second position on the premier league table.