Jamie Carragher has revealed he is yet to be fully convinced that Lisandro Martinez is a long-term option for Manchester United as a central defender.
The Red Devils spent more than £50million to sign Martinez from Ajax during the summer window and he instantly went into the starting line-up at Old Trafford. But his Premier League career got off to an inauspicious start as United lost to Brighton on the opening day, before being thrashed by Brentford 4-0.
Following the defeat in west London, Martinez came in for heated criticism with question marks over his long-term viability as a centre-back. Carragher and Sky Sports colleague Gary Neville both suggested that at 5ft9, the Argentine was too small to thrive playing centrally in a back four.
