Since overcoming a COVID-19 outbreak just before Christmas, which resulted in the games with Brentford and Brighton being postponed, Ralf has had virtually a full complement of outfield players to work with, bar a few defensive issues for the 1-0 defeat to Wolves on Monday.
Phil Jones came in at centre-back for that game for his first appearance in almost two years, as Harry Maguire and Eric Bailly were injured. Victor Lindelof has also missed the last two games with COVID-19.
Rangnick acknowledges that United, as is the case with other clubs, do have a large squad of first-team players, when everyone is fit, and that means that not everyone can get on the pitch at the same time.