Cunha injury latest: Red Devils boss Amorim cautious ahead of Manchester derby

Ruben Amorim has warned that losing Matheus Cunha to injury would be a "significant blow" for Manchester United.

Cunha, who was substituted just over 30 minutes into the 3-2 win over Burnley at Old Trafford, has been left out of Brazil's squad for the upcoming World Cup qualifiers.

The Brazilian national team's social media account confirmed that the versatile attacker had suffered a "muscle injury."

Amorim's comments after the game hinted at his frustration with the packed schedule.

"With the problem of Cunha, you don’t know if that full game in the middle of the week has something to do with the injury today," he said.

The United boss emphasized Cunha's importance to the team, stating, "We need that guy really bad to be competitive."

With the international break, Cunha has time to recover before the Premier League resumes.

United's return to action features a challenging schedule, including a trip to rivals Manchester City on September 14, followed by a home match against Chelsea six days later.