The former Everton boss took over at Old Trafford during the summer following Sir Alex Ferguson's retirement.
The defender told the Daily Star: "To be honest, I don't think much has changed. There's been a little bit of his input in training and stamping his mark on what he wants, maybe we pass the ball slightly more.
"But that's just his view on the game and I think it's worked really well. Other than that, there's not been much change.
"David's a very passionate manager and he wants to achieve great things for the club. Hopefully, the players can help him do that."
After the opening three games of the new Premier League season, Manchester United sit seventh in the table.