Young picked up a groin injury in United's win over Liverpool, which van Gaal said meant the player would be out for a long time.
According to the Daily Mirror, which speculates about the future of the Old Trafford boss, Young is said to have felt alienated by the Dutchman, who appears to have written off Young's chances of being part of the England squad at the European championships in the summer.
Van Gaal commented on Young's injury prior to the weekend's defeat to Southampton, telling MUTV: "Ashley Young has a severe groin injury, it shall be operated on, so he’s [out] for a long time."
Young has been used mostly in a full-back position by the Manchester United manager and it led to him claiming that he needs for full-backs to compensate for Young's absence, anticipating that he could be sidelined for a large part of the second half of the season.
It does seem to be a little strange to get so angry over what is likely to have been reported to the manager by the medical staff and something that van Gaal then relayed to the media.
No timescale has been put on the recovery, and it seems to have been suggested by some that he could be out until the end of the season. It could be that the ambiguous nature of the injury update - and not putting a timescale on things - has led to many suggesting Young will not feature much between now and the end of the campaign.