Manchester United have announced that summer arrival Ander Herrera suffered a fractured rib against West Ham on Saturday.
The Spanish midfielder hurt himself in the win over the Hammers at the weekend and was taken off after 74 minutes.
The Old Trafford club were planning to make a statement on their official website last night but delayed it to give them more time to assess Herrera's injury and he is now looking at three weeks on the sidelines.
The player himself was in positive mood on Facebook, posting: "Three very important points! I hope my back is fine soon. Thanks for your messages!".
However, manager Louis van Gaal might not be feeling so jovial.
Herrera joins fellow midfielders Michael Carrick, Marouane Fellaini and Ashley Young in suffering injury problems. Meanwhile in defence Chris Smalling, Jonny Evans, Phil Jones and Jesse Lingard are all struggling. Wayne Rooney is also suspended until November.
Manchester United's next game is on Sunday against Everton.
Robin van Persie has revealed that Louis van Gaal has challenged his Manchester United players to become more like the Dutch, urging them to “pull on the same rope” by becoming more outspoken in team meetings.