Jose Mourinho believes David Moyes has what it takes to be successful at Manchester United.
Mourinho is back in England for his second spell in charge of Chelsea, but rather than going head to head with Sir Alex Ferguson on Monday, it will be Moyes, announced as the Scot's successor earlier this summer, in the opposing dugout.
Both managers have flexed their muscles on the opening day of the season by recording convincing wins, and Mourinho says he expects a game just as tough as any he encountered against Ferguson at Old Trafford on Monday.
"There are things that we cannot change," Mourinho said.
"David has experience and he knows that he cannot change history. The history that Sir Alex did is there and it is there forever.
"Is that a problem for David? I don't think so. I think David doesn't want to be compared with Sir Alex.
"I think he's in the best moment of his career - maturity, experience, a big, big, big club, very good players. I think he's in a fantastic position and I think he's going to do very well.
"I hope he doesn't win everything and he will leave something for the others, but he's in fantastic condition."
Mourinho and Ferguson shared some fierce battles dating back to the former's victory while still in charge of Porto in 2004, and the pair also had a close friendship - and the Special One says he wants the same relationship with Moyes.
"You have the guarantee that after the match, independent of the result, we are together again, enjoying our time and having a laugh, he added.
"With David we don't have this kind of relationship, but we have a good relationship.
"I think we can start this kind of very nice relationship I had always with Sir Alex, no problem.
"During the game, it's a game. It's not manager against manager. It's club against club, it's 11 against 11, it's big players against big players. We just do our job normally."