He's belong to the Januzaj/Pereira type of talent that you know for sure that they will be given chances in the first team regardless of the management at the club unless you have an extreme anti-youth like Mourinho.His physicality will be useful for his adaption to first team football however he's quite new to the CM role so inconsistency is to be expected.Nobody can predict how far they will go especially with the uncertainty at the club at the moment which unlikely will change in the near future but the raw attributes are there.
It's actually very easy to spot those whom the academy staffs think are special - they often play ahead of their age group unless they have serious injuries in their younger ages or are late developer like Scholes or Lingard (no,Lingard wasn't belong to that category).Currently those who are getting that treatment are Fosu-Mensah,Tuanzebe,Gribbin,Williams,Rashford,Gomes and Reid (though Reid might due to shortage of players in the U21s).In the past 2-3 years Januzaj/Pereira/Wilson all got their early promotion to the U18/21s and have been given chances in the first team (you can argue that they should be given more or less chances but that's for another thread).
Pearson, despite being a lovely player to watch and probably will be fan favorites whichever club he goes to, is one level down that calibre of talent at least.You have that kind of players making it at the club from times to times (O'Shea etc and Lingard could be one) but there's a lot of factors behind it such as managerial preference,right timing,right mentality,how "fit" they are to English football and the EPL,etc,..People often think too simple about youth promotion - the kid is either good enough or not good enough - when environment often play a very important role as well.