The FA are still considering whether to take action against Chris Morgan, the Sheffield United captain, after his challenge left Barnsley's Iain Hume with a fractured skull.

Hume was forced out of the action at Oakwell with after being caught in the side of the head by Morgan's elbow. Simon Davey, the Barnsley manager, later claimed the forward's injuries had been life threatening.

Morgan was shown a yellow card by referee Andy D'Urso for the offence and the FA initially confirmed they would not be punishing the former Barnsley defender further. But Barnsley have since submitted further evidence, forcing the FA to reopen the case.

"There has been another development on this," an FA spokesman said. "Barnsley have told us they are sending additional evidence, video footage of the incident, which we expect to receive today. We will, of course, look at that before making any final decision."

Hume, who also suffered internal bleeding, underwent emergency surgery in a Manchester hospital on Sunday night after his condition deteriorated.

The Canada international, released from the hospital's high dependency unit on Tuesday, will be sidelined for at least six months and there has been intense media speculation this week the game's authorities would punish Morgan retrospectively.

A furious Davey has also accused referee D'Urso of failing to protect his player. He said Hume had complained to the referee about being elbowed on numerous occasions before the 35th-minute incident, which floored the 25-year-old.

The FA initially confirmed Morgan's challenge, although a red-card offence, could "not be described as exceptional". Officials at Soho Square said they had "canvassed expert opinion in the game" and had concluded they would not intervene.

But Barnsley want Morgan punished and have submitted further video footage in a bid to convince the game's ruling body to take action.