Maybe Rangnick doesn't consider tardiness indiscipline, I don't know. Or maybe he just didn't want to pile on a struggling former player. Matic was there that very same season Rangnick was and says Sancho was constantly late. Is he lying?
https://onefootball.com/en/news/jadon-sancho-late-for-borussia-dortmund-team-meeting-28187681
Jadon Sancho was left out of Borussia Dortmund’s starting XI against Barcelona on Wednesday as he was late for a team meeting, according to Bild.
Prior to the game, Lucien Favre told Sky Germany: “We need players on the pitch who are focused and ready.” The Dortmund head coach later insisted that his decision to bench Sancho wasn’t related to this incident.
This is the second disciplinary incident surrounding the 19-year-old after he returned late from international duty last month, resulting in a fine and a suspension given by Borussia Dortmund.
He was also reportedly demoted to the U23 team by Peter Stoger for being constantly late in his first season at Dortmund (though he was very young at the time, to be fair).
https://www.telegraph.co.uk/world-c...Echobox&utm_source=Twitter#Echobox=1668188602
Jadon Sancho’s timekeeping was an issue for England backroom staff before losing his place in Gareth Southgate’s squad and eventually missing out on the World Cup this week...
And Ten Hag simply said he wasn't selected for the Arsenal game because he hadn't performed well enough in training (and Ten Hag even actually denied that it was a result of indiscipline), which led to Sancho's infamous social media post and subsequent strike for 5 months. Hardly professional behavior on his part, whatever you think of Ten Hag.