Ole Gunnar Solskjaer says he still hasn't picked his starting XI for the upcoming Premier League opener.
United are less than two weeks away from facing Chelsea at Old Trafford.
But Solskjaer still has to make his mind up on his best line-up following a strong preseason.
Speaking after Tuesday's 1-0 win over Kristensunds, the Norwegian said: "It's not about one team for the first game and that's the team for the rest of the season.
"We've got a strong squad and I feel there's not too big a difference when we make the subs.
"We're going to have to find the right balance. I've not really picked the first XI yet, but most of the relationships we've tried.
"Milan will be another last test and then let's see how we decide. I think when Paul Pogba doesn't start, I think you know it's not the first XI."
