Man United assistant manager Ruud van Nistelrooy is reportedly concerned about being viewed as the man who betrayed Erik ten Hag.
Ten Hag signed a new contract in the summer but already finds himself under huge pressure once again after another poor start to the season.
The Red Devils sit 14th in the Premier League with just two wins from their opening six matches.
Harry Maguire rescued a point for the Ten Hag's side at Porto in the Europa League on Thursday, a goal that may well have saved the Dutchman's job.