However, it is understood neither the Dutchman nor his coaching staff have been told what is happening by United's executive vice-chairman Ed Woodward.
Van Gaal said "it's over" when a reporter approached him as he left the hotel on Sunday - but he is said to have been referring to his side's season rather than his own job.
Other members of Van Gaal's Old Trafford staff are believed to be unhappy at the lack of communication from the club's hierarchy.