The endless tactical debate, whereby players are completely inhibited from showing that they can play football because their clueless coach plays them 10 yards further back than he's supposed to exhausts me. I think the majority of us would give him the benefit of the doubt if he brought some intensity and desire to the field when he got the opportunity. If we felt it mattered to him. If we felt he cared about being here. But he didn't. So get rid.
Quite a conflation in your post between effort and the kind of football being played. Southgate is a poor coach who has been given a golden generation of talent, which is damning in itself because this is the period of time where England have a genuine chance at both the European and World Cup.
Southgate does not play technical nor complex football; no bedazzling systems or patterns of play or intricacy. He’s always going to opt for the best vertical players; athletes with varying degrees of ability. Kane breaks that rule, but for the remainder it’ll be athletes over technicians, or at the very least, technicians dropped well before the athletic players. Sancho isn’t the only fall guy, but he is the most affected, being the least athletic of the lot.
The conditions Sancho needs don’t rely upon where he starts out, but how many players he has to play off who are comfortable playing combination football and pass and move stuff to the highest degree. That’s Sancho’s wheelhouse and where he has few peers. He has dependencies in that he needs to be in proximity of good, technical players, but under that proviso, the golden boy status he always had will be on display as this is where others cannot keep up with him.
Putting it another way, one technical player (who isn't an elite athlete) amongst those who struggle to play that rapid one and two touch football, is going to be found wanting; two technical (but not particularly elite athletes) players bouncing passes between themselves and constantly re-working position and new angles for themselves becomes a big problem; three or four of them, and you have a plague that is giving teams fits because they cannot track the movement or keep up with the progression of the ball. In this manner, Sancho is essentially a Spaniard in an English body and kit, but that's not to say England couldn't play that way under an able coach, after all, Sancho, Foden and Grealish (now) are honed from the same school of coaching and principles and certainly the former two can ping passes between themselves blindfolded. Sancho's template is not now - it was formed years ago, when he was taking the Youth World Cup by storm and earning countless plaudits on his way up to becoming a pro, and carrying straight over into professional football. All football of a similar brand, and yes, he is more bound to teammates than those solo players who don't need particular conditions to thrive. Literally all of that should be basic stuff for any suitor to know and cater for or not pursue him.
The disconnect with a lot of United fans and the player came from him not being some Best/Giggs/Ronaldo flying, maverick winger who could take on wave after wave of opponents by himself and then burst into dangerous passing or shooting positions with nobody else in sight. Sancho was never that player. In fact, I thought we'd be changing the way we play to cater to Sancho's game, or better to say, facilitate it and get ourselves playing a more modern brand of football. what's ended up happening more often than not is us isolating him and taking away the very things he's made his name off of. It's not just Sancho that has been compromised by that, btw. Antony has some of the same issues, and we should have been looking at flying wingers if we wanted... flying wingers, and that's on whoever made the assessment before purchase to ascertain - you don't just blindly buy such expensive players and have no clue how to use them.
But that's all on the pitch. That thing about wanting it and appetite for the game, yeah, I dunno about him and that. Being a bit tardy and unprofessional is one thing, but major insubordination, I wouldn't have known he has that in him, and that has been disappointing, as has his desire to give everything, but I still think that's a case of a golden boy being a bit shell-shocked and probably having to go back and work on himself in the face of adversity he's never known before as a player.
Would like to end by saying these are not 'excuses' rather, the player as I've perceived him ever since setting eyes on him. He hasn't changed as a footballer - his YWC games are accessible and it's the same player as he was at Dortmund. How we didn't know what we were buying kind of blows my mind, or probably better to say, disappoints even further as we seem to be experts at missing the mark when it comes to player recruitment.