The Manchester United midfielder is set for another spell on the injury list with a muscle injury.
Speaking to MUTV, the Dutch manager said that the England international has suffered a muscle rupture and will now spend four weeks on the treatment table.
That will see him miss this weekend’s Premier League game against Leicester City at Old Trafford, while the four-week spell will also see him sit out upcoming games against Cambridge United in the FA Cup as well as fixtures against West Ham, Burnley, Swansea City and Sunderland in the league.
“Michael Carrick has been injured now so he is out at the weekend,” said van Gaal.
“He can be important for the team but he is now injured. I think it shall take more than four weeks, so it is not a minor injury but a muscle rupture, I think.”
This is the latest in a series of injuries for Carrick this season, with the 33-year-old limited to just 14 appearances so far. The United vice-captain suffered ankle ligament damage during the summer, ruling him out until November, and then picked up a minor groin injury shortly after his comeback.
On a more positive note, Dutchman van Gaal revealed that winger Ashley Young, who has been deployed in the wingback position this season and looked to reinvent himself at Old Trafford in the process, is set to return after missing a month with a hamstring injury.
Young was ruled out after picking up the injury against Stoke at the beginning of the month, but is now close to full fitness once again.