OXFORD United face a nervous wait before they find out the severity of James Henry's injury.

Last season's top scorer went down in the 1-1 pre-season friendly at Woking.

There was immediately concern for Henry, who held his arm up to signal a problem while he lay on the turf.

While he was able to walk off, with a limp, United will not know until the start of next week for how long the influential midfielder will be sidelined.

Boss Karl Robinson said: "As he got pushed from the back he kicked the floor and his knee opened up a little bit.

"We’re waiting to find out, it will take 48 hours for it to settle down and we can make any sort of assessment.

"We’ve all seen bad injuries and there tends to be one common thing you see, which is the player knows themselves.

"When you have that straight arm in the air you know there’s some severity to it.

"He’s OK, he walked off, which is a good sign, but the knee’s too sore to really assess it.

"Once he gets a little bit less pain we can assess it properly and if he needs a scan we’ll send him next week."