United have suffered nearly 50 injuries during the first half of the season with practically every first team player missing some part of the campaign through various issues.
There are signs that crisis is ending with potentially Daley Blind being the only absence when the club end the festive period.
But with four games in ten days and players that seem susceptible to regular injuries, it wouldn’t be beyond the realms of possibility if the crisis worsens once more over the next few weeks.
Speaking in an exclusive interview with BT Sport, Ferguson said: “I’m not interested in what’s happening with the players he brought in because they’ll need time. When I took in Patrice Evra and Nemanja Vidic in January 2007, they were all over the place. They took 5 months to get used to playing for Manchester United and the history of the club.
“These new players will be exactly the same. They’ve still got great players.”
The former United boss also had plenty of praise in store for Louis van Gaal, calling him a ‘great coach’ and Ferguson believes the team will be fine once everyone is available for selection.
“First of all, Louis van Gaal, I don’t know how he can expect to get the best results with the injuries he has had. When he gets his best players back you watch United because he is a great coach and he’ll do well,” he added.
“Once we’ve got the players back, we’ll be flying, there’s no mistake about it.”