Man United qualification to the round of 16 is 50-50 because if peradventure, they could be able to win Bayern Munich which I am not confident on that, they still need to depend on the result of Copenhagen and Galaxataray match to know their fate. They have put themselves in a very tight corner and this is very bad.
It is better than United should start preparing for Europa because that is where fits them since they are not that serious with their UCL matches, maybe they will do better there.
I think under 50% ration for Manchester United will get one ticket for 16th round because their position depend on other match although have difficult opponent on last match against Bayern Munich. In group stage matches, have the only one team Copenhagen took one point from Bayern Munich last match and not really important with Manchester United playing on their home will easily for defeating Bayern Munich.
Manchester United possibility for qualifying next round have waiting match result between Copenhagen vs Galatasaray, not effort yet if can defeat Bayern Munich but the other match result winning by one team between Copenhagen or Galatasaray and Manchester United fail get one ticket on 16 round. For Manchester United fans not have huge expectation for playing on 16 round of Champion League, better focus for playing on Europe League but have to beat Bayern Munich last match have unbeaten record in group stage matches.