After the promising start made by Erik ten Hag in pre-season, last weekend's opening 2-1 defeat by Brighton showed just how far Manchester United still have to go before they are competitive again.
Some of that work will be undertaken at Carrington and the new manager certainly wasn't going easy on his players in the baking sunshine this week.
Next up for United is a trip to Brentford, which they could do with winning considering they will face Liverpool in their following league game.
Here are five things we spotted in training ahead of the trip to West London: ALSO READ: United share price soars as Glazers make huge gain after takeover claim Clear focus on one-touch passing in training drill There was a clear focus on quick, one-touch passing as Ten Hag continues to try and make United a more dynamic and fluid side.
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