Manchester United boss David Moyes has admitted his side's Champions League match against La Liga side Real Sociedad will be a hard test.
Moyes' side host Sociedad on Wednesday before facing Jagoba Arrasate's side at the Anoeta Stadium at the beginning of November.
Real Sociedad are currently in mid-table, but go into the game on the back of a terrific result against Valencia.
United's midweek opponents Sociedad came away from the Mestalla Stadium with three points intact as goals from Antoine Griezmann and Ruben Pardo ensured their side claimed an impressive 2-1 win against Valencia.
Moyes has a number of injury problems ahead of Wednesday's match as Red Devils stars Rio Ferdinand, Nemanja Vidic, Tom Cleverley and Danny Welbeck were all unable to take part in Tuesday's training session.
However the former Everton boss does have some good news as Adnan Januzaj is now available to play in the Champions League.
Moyes' side are currently joint-top of Group A, level on points with Ukrainian champions Shakhtar Donetsk.
Click through the following pages to see who we think will start tomorrow's Old Trafford encounter.