Ferguson stayed behind to finalise the Moura business when the team left for Norway yesterday for the match against Valerenga.
Van the man: Robin Van Persie is close to moving to Manchester United
Ferguson is optimistic that any further hitches will be overcome for the Holland striker to become a United player before the season's curtain-raiser in a fortnight.
The Arsenal striker, the current Footballer of the Year, has been courted by Manchester City and Inter Milan and his inclusion in the squad's pre-season preparation in Germany has increased speculation that he may even sign a new contract at the Emirates.
Twinkle toes: Lucas Moura will move to Old Trafford
The United boss will have to compromise on his refusal to comply with the Gunners' £25m demand, with the final figure likely to be about the £20m mark.
United's long-awaited transfer move nails suggestions, denied by Ferguson in an interview in The Mail On Sunday two weeks ago, that his spending budget had been restricted because of the club's massive debts incurred by the Glazer family's takeover.
But there remains a schism between a large faction of United supporters and the American owners, heightened by their bid to pay down some of their £420m debt by raising money on the New York Stock Exchange.
However, Ferguson remains committed to the club in spite of issuing a passionate response last week to speculation that he stood to profit from the Initial Public Offering to sell off 10.2 per cent of the club.
He said: 'As one of the people suggesting he was likely to participate in the $288m "2012 Equity Incentive Reward Plan" the club are putting in place, I'd like to apologise to Sir Alex for suggesting that personal gain was a motivation in his support for the owners.'
Meanwhile, United will be featuring a number of first-team regulars against Valerenga, with the likes of Wayne Rooney, Patrice Evra and possibly Nemanja Vidic returning for their first pre-season action.
All smiles: Alex Ferguson looks on during Macnhester United's friendly against Shanghai Shenhua
'It's definitely an awkward feeling,' he said. 'It's a different feeling because, although you might think you know what your best starting team is for Everton away in the first game of the season, it's not necessarily going to be that way.
'I'll probably play the ones who are the fittest ones, the ones who've had a proper pre-season. We've got plenty of options but to complete your team you're going to look at the ones who are going to come back in terms of fitness and what they're like.'