Don't be too confident buddy, the hierarchy of Manchester united are very unpredictable, they can do the unthinkable and shock the football world, Nicholas Jackson is not that bad as most football fans are making it looks like, just that his wastefulness in front of goal is just too much for any right thinking club not to pay close attention to before making any decisions wether to go for his signature or not.
At Chelsea presently he knows that his playing time will be limited because of the quality attackers that has been brought in, so if he want to be playing week in week out, he has to move to a different team.
So If he succeeded in going to Manchester united, I think that he is going to play ahead of Hojlund because he is a better attacker than the Manchester united center forward.
No one is saying Nicholas Jackson is bad because we're not talking about that, and perhaps the issue now is that the value of a player is so high compared to his contribution. Manchester United won't spend that much money on a player because they've already done that. Some of the players Manchester United bought during the Erik Ten Hak era were expensive, but look at their contributions, and I'm confident that under Amorim, Manchester United won't repeat their mistakes. There's no guarantee Nicholas Jackson will be significantly better than Hojlund, although last season he seemed like a striker who had lost his spark.