The Dutchman held crunch talks with Solskjaer in the summer and was promised plenty of playing time this season.
However, van de Beek remains on the periphery at Old Trafford having been overlooked a number of times by his coach.
Solskjaer is demanding more from the 24-year-old and insists he won't get regular playing time until he improves, per MEN.
Van de Beek had a touchline tantrum during the closing stages of the midweek Champions League win over Villarreal, tossing his training bib and chewing gum when it became clear he would not be used as a substitute.
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