As impacts go, Casemiro has had a significant one at Manchester United.
The Brazilian international, following his big-money arrival from Real Madrid in August, has played an undisputed role in helping transform United's fortunes. Working alongside fellow summer recruit Christian Eriksen and Bruno Fernandes in a new-look midfield, the 30-year-old has had an impact so impressive that some United supporters are already talking about how the Reds will go about the task of replacing him when the time comes.
Although everyone who watched United frequently last season knew that it was imperative that the club signed a world-class defensive-midfielder in the summer transfer window, the Reds, initially, had plans to bring Frenkie de Jong through the door. The Dutchman is a forward-thinking midfielder who would have added control and a progressive perception to the midfield.