For the 15 or so senior players who returned last week, they have been impressed with the level of detail Ten Hag is providing about how he sees the game.
A United source told The Sun: “It is just the start, but the players are tuned in.
“When he speaks, everyone — absolutely everyone — listens.
“The training sessions have been tough but they are also enjoyable.
“Plenty of one-touch, two-touch, quick football and forward-thinking play. He tells them that the best form of defence is possession.
“He wants to tire out the opponents by keeping the ball and moving it quickly.
“The quality isn't there just yet because it's early in the pre-season.
“Plus, it requires a lot of practice to build up the levels of quality needed for such a strategy.
“Some players have struggled with their touch and their passes but Ten Hag and the rest of the coaching staff have been encouraging.
“Lots of the players had a really bad end to the season and then it's tough to relax and unwind over the summer as they are frustrated.
"Some weren't looking forward to coming back because the dressing-room mood has been bad, but that fog has lifted and they are enjoying themselves again.
“There is a spring in everyone's step and they feel united."