I admit that Rashford like most kids post SAF weren't properly managed. Take Marcus as an example. He was thrown in the deep end not because he was ready but because LVG was stupid enough to think he could win the EPL with a tiny squad only for him to start playing anyone with 2 legs once injuries hit home. Tbf Rashford seized the chance with both hands but it was evident that his game wasn't yet fully polished and he lacked the maturity to get himself into that spotlight. Then United made him the face of Manchester United, the Glazers made him untouchable while successive managers piggy banked on his goals to the expense of him picking injuries or given the time to develop into an all rounded player. Fast forward to present time and we've got a painfully one dimensional player and who thinks that he's bigger then the club.
Having said that there's zero excuses for anyone not to apply himself in training. That should come natural to any player like breathing. It makes it worse that he's a local lad (thus a supporter of the club like me and you), he's a senior player and a top earner. He also happens to be at a top club which means he can afford any professional help in the world and I am pretty sure that if he asked for it then it would have been given to him for free by the club. And this isn't just about Rashford. FGS look at how many players who had taken the fans for a ride since SAF's had gone (Pogba, Lingard, Sancho, Shaw, Rashford, ADM). Look at this side FGS. Our two highest earners do not even play football on a regular basis. How fecked up is that?
These pity stories (Sancho, Rashford, Lingard etc) do not happen at other clubs simply because success is central at this club and therefore there's little room for excuses. It didn't happen at United when we were successful either because SAF would just usher the player out of the club. Think of the likes of Djordic, Ravel and Gillespie or more senior players such as Ince, RVN and Keane whose behavior went out of the line. I know of a kid (14 years of age back then) who impressed at United but wasn't signed simply because he called home a bit too much. That was enough to persuade the United academy staff that he simply lack the character to build a career at a club like United. That's the ruthlessness United had when we were at our best and that's how we must act if we want to return to our best.