The 24-year-old departed for Merseyside earlier this week and will remain with the Toffees until the end of the season.
He last featured for the Reds in our 1-0 Emirates FA Cup win over Aston Villa last month and Rangnick feels the move is one that will benefit the Dutchman, giving him more opportunities to play in the Premier League.
''In the end it is a question of competition,’’ said the German.
''He didn’t get enough game time, but that is not to say he is not good enough to play in the Premier League or for Manchester United.