According to Sky Sport on Sunday, October 18, 2026, Manchester United defender Lisandro Martínez was substituted at half-time after experiencing a thigh problem, with manager Michael Carrick confirming the issue. The development has raised concerns about the defender's fitness as United continue their campaign and prepare for their upcoming fixtures.

Martínez's withdrawal will be a concern for Manchester United, especially because of the important role he plays in the team's defence. The Argentine international is known for his aggressive style, strong tackling and ability to play the ball out from the back.

His presence often gives United greater confidence when building attacks from defence. Therefore, any injury that keeps him out of action could force Carrick to make changes to his defensive plans.

The decision to substitute Martínez at half-time suggests that the club did not want to take unnecessary risks with his fitness. Although the exact severity of the problem has not yet been established in the information provided, further medical examinations may be needed to determine how long he could be unavailable.

For now, Manchester United supporters will be hoping that the injury is not serious and that the defender can return to training as soon as possible. A thigh problem can vary in severity, meaning it would be too early to predict his recovery time without a confirmed medical assessment.

Martínez has become an important member of United's defensive unit because of his determination, physical commitment and ability to help the team maintain possession under pressure. His partnership with the other defenders is also important when the club faces strong attacking opponents.

If he is forced to miss upcoming matches, Carrick may have to consider alternative defensive combinations. The manager will need to ensure that any replacement can maintain the organisation and confidence required at the back.

The injury news also comes at a time when attention is focused on Carrick's position as Manchester United manager. The club's performances and future plans remain important talking points, making the fitness of key players another issue the coaching staff must manage carefully.

However, the priority will be to establish the extent of Martínez's thigh problem before making any decisions about his availability for the next game.

Manchester United have yet to provide a confirmed recovery timeline in the information available. Supporters will therefore be waiting for further updates from Carrick and the club's medical team.

For now, the defender's condition remains uncertain, and United will hope that his half-time substitution was a precaution that will not result in a lengthy absence.