Manchester United has already earned a reputation as an unstable team, so I wouldn't count on them in matches against any opponents. It's just not this team's time right now, so it's better not to mention Man United in your bets for now, otherwise you might think that this team will play poorly in their next game, but they will win confidently, especially since they will be playing against Burnley. But I wouldn't touch this match, no matter how tempting it may seem at first glance.
Tomorrow's match between Newcastle and Liverpool is likely to be a high-scoring game, so you can bet on the total being over 3.5.

Manchester United have failed a lot and yes you are right to say that their have a reputation of always missing out to make the title top 3 or even winning any league, this is because a lot have not been put in place to check mate and fix the issues that results into Manchester United being at the level where there are right now, such as spending good amount of money to bring in good players that can change the Faith of the club from what it used to be, if that is not done yet, there is no way we can expect to see a positive records from Manchester United.