Marcos Rojo
Rojo faces a length period out after suffering a dislocated shoulder.Getty Images/Shaun Botterill

Manchester United's injury crisis has deepened with the news that defender Marcos Rojo will miss the club's next five matches including the visit of Liverpool next month.

The Argentina international suffered a dislocated shoulder in the 1-0 derby defeat to Manchester City which saw him miss the win over Crystal Palace prior to the international break.

Though the 24 year old will not require surgery, United have yet to confirm the extent of the injury but the player says he will be absent for the next four weeks, forcing him to miss a vital period of the season.

"The truth is I am very happy because I ended up not having surgery of the shoulder, but yes, I work hard to strengthen the affected area," Rojo told Telam. "For now I will not be able to return to play for another three or four weeks."

Rojo will miss the trip to Arsenal as the Premier League resumes this weekend as well as the games against Hull City, Stoke City, Southampton and Liverpool before a likely return before Christmas for the trip to Aston Villa.

Although United were expected to be without Rojo for the game against Arsenal, the news is a further blow to manager Louis van Gaal who is now likely to be without 10 first team players for the game at the Emirates Stadium.

David de Gea, Michael Carrick and Daley Blind have joined the United injury list during the international break, with the likes of Rafael and Radamel Falco -- who have both returned to training after hamstring and calf issues -- not expected to be fit.

Jesse Lingard, Ashley Young, Jonny Evans and Phil Jones complete the current United treatment table and leaves Van Gaal with wafer-thin resources as the club head into the busy festive period.