Manchester United manager Jose Mourinho has revealed that he does not expect Marcos Rojo to recover from his injury problem until December at the earliest.

The Argentina international underwent surgery in May after rupturing the cruciate ligaments in his knee during the Europa League quarter-final win over Anderlecht.

Mourinho predicts another five months or so on the sidelines for the versatile defensive player, while Luke Shaw and Ashley Young will also miss the start of the new Premier League season.

"No chance [of those players being ready] for the beginning of the Premier League," he told reporters. "Luke is the first one to recover. Marcos will be the last one and Ashley in between. So I would say Shaw will return in September, Young in October, Marcos in December or even January.

"But it's good for them to be with us and recover with the group [on our US tour], and I have to say the group is really strong. It's important for them to be with us and not alone in Manchester."

Rojo made 41 appearances for United in all competitions last season, including 18 starts in the Premier League.