I don't get this concept which is being posted a lot on social media too. Conte won the league at Chelsea with a front 3 of Pedro, Costa, Hazard.
If he planned to use this formation at Man Utd, the problem won't be for these players, 2 of those will play in his system, which realistically it's hard to get more than 2 into any system. The problem is more that our full backs aren't remotely suited to being wingbacks. There is also no place for Bruno Fernandes really in his favoured system, it's his role that would be far more questionable than Sancho, Rashford, Greenwood.