MU's defense is not that good so predicting them will have a clean sheet against Liverpool is like underestimating Liverpool too much.
Since MU is qualified for CL next season already, I do think that they wont play too aggressive.
They may save some players for the Europa League final so I think Liverpool is having chance to win the game.
It shown on the odds by bookmarker where Liverpool has lower odds to win the game than MU.
My prediction, it will be a tight game and may ended up with a draw or a win with 1 goal difference only.
I feel the same vibe too. Man United plays very carefully to maintain the performance of their team. Their defense has decreased a little lately, and in view of their previous matches Leicester are better to Man United. Their attacks are not that aggressive and their possession is also very standard. If they are still playing safe like before, the possibility of Liverpool winning is still there. Even though their victory was not that meaningful.