Former Manchester United coach Steve McClaren has been impressed by their summer market work.
According to McClaren, new arrivals - particularly world record signing Harry Maguire - will provide a similar impact to Virgil van Dijk at Liverpool.
He told Sky Sports: "[They have] signed [Aaron] Wan-Bissaka and the young boy from Swansea [Daniel] James. But the biggest of the summer was Maguire.
"He's like van Dijk signing for Liverpool, the difference - the person that took Liverpool to the next level. I think Maguire can do exactly the same for Manchester United.
"He did it on Sunday against Chelsea, he was magnificent. He's a great defender, a leader.
"The way he speaks to the players and his demeanour, confidence and courage when he has the ball, I think he's the perfect signing for Manchester United."