Jamie Carragher believes Manchester United will regret not recruiting a more long-term solution at defensive midfield.
One of the dominant stories of this summer's transfer window has been the astronomical prices quoted for a specialist No 6.
Though United, with their acquisition of Real Madrid legend Casemiro for an initial £60m fee last summer, could be seen as early adopters.
Carragher reckons Erik ten Hag's hasty purchase of the veteran following an unsuccessful attempt to nab Barcelona's Frenkie de Jong, could now hurt the side in a world where newer, fresher models are on the market.