Lisandro Martinez had a tough game against Brentford on Saturday night.
The Argentine defender arrived at Old Trafford this summer and has already endured a difficult campaign in his first two games of the Premier League.
In Brentford’s 4-0 win over Man United, Martinez struggled to deal with the opponents’ physicality.
The £57m defender was highly-rated at Ajax and has worked with Erik ten Hag in the past few seasons.
But his height at 5ft 9in is too short for a central defender according to Liverpool legend Jamie Carragher.
‘[5ft 9in] that’s small,’ he told Sky Sports.
‘That’s small for any player on the pitch in some ways now, really. You think how big and powerful players are. I haven’t seen that much of him, but he must have a really good spring to play centre-back in any league.
‘When you think of how that could affect Man Utd set piece wise, if one of your centre-backs is really small, you’re relying so much on the other centre-back to deal with things aerially coming into the box, so I think that could be a problem.’
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