Barnsley boss Simon Davey has selection problems for the game against Watford with Iain Hume, John Macken and Martin Devaney all out.
Hume remains in hospital with a fractured skull following the clash with Sheffield United's Chris Morgan while Macken has a hamstring injury and Devaney misses out due to a groin problem.
Simon Whaley is also on the sidelines with a foot injury but Davey does have Diego Leon and Mounir El Haimour available and they have been added to the squad to take on the Hornets.
Anderson de Silva is ruled out through suspension but Stephen Foster is back in contention after serving his ban.
Meanwhile, the FA have released a statement concerning Hume's clash with Morgan and revealed they are awaiting further evidence on the challenge from the Tykes before taking action.
It read: "Barnsley have informed The FA that the club will be submitting further evidence in relation to the incident and the matter remains open pending consideration of this evidence."
The governing body also said Davey had been charged with improper conduct for a separate incident in the second half of the game against the Blades.
Read more about Barnsley.