27/07/2011 17:06, Report by Gemma Thompson in New Jersey

Hernandez given all-clear

Story updated 20:30 EDT

Sir Alex has confirmed that Javier Hernandez has been given the all-clear after suffering mild concussion on Tuesday night.

The incident happened during training at the Red Bull Arena in New Jersey ahead of United's friendly clash with the MLS All-Stars. The Mexican striker spent the night in hospital and is now resting at the team hotel.

A club spokeswoman told earlier on Wednesday: "Chicharito sustained a mild concussion during training on Tuesday night. We have taken all the necessary precautions, which included an overnight stay in hospital."

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