Jamie Carragher criticised Lisandro Martinez for his performance against Brentford on Saturday and said that the 5ft 9in defender would never succeed in the Premier League.
The centre-back joined Manchester United in July after signing a £55million deal from Ajax. The switch has seen him link back up with his former boss Erik ten Hag after playing under the Dutch manager for three years.
However, Martinez has struggled to his the ground running at Old Trafford and came under-fire following his performance during United's 4-0 loss to Brentford on Saturday.