Aston Villa are considering seeking advice from Manchester United about how Paul Scholes recovered from his blurred vision as Chris Sutton struggles to recover from a similar setback.
Scholes was sidelined for the final five months of last season but has returned to play a major part in the Red Devils' bid for Premiership title glory.
Sutton has been out of action since the clash with United at Villa Park on December 23 and there has been little improvement in his condition.
The 33-year-old would be prepared to play sooner rather than later if there were assurances his condition would not deteriorate should he receive another blow to the head - but they cannot be given.
Villa manager Martin O'Neill said: 'I think Paul Scholes and his situation is something that we should have a look at.
'Maybe we should find out a bit more about that particular injury and see if that will be of benefit to us regarding Chris's condition.
'The situation with Chris is it (his vision) might suddenly start to come back or it may never change at all.
'If he thought it wasn't going to change and never got any worse by being hitting on the head again, I think Chris would be happy.
'Chris would love some positive news and would be prepared to play again if he could get a guarantee that another knock on the head wouldn't make it worse.
'With the best will in the world, no-one can give him that assurance.'
Meanwhile, O'Neill is prepared to allow some of his fringe players to go out on loan because of the club's dearth of fixtures.
Villa have only one game in the next month - away to Fulham on March 3 - before entertaining Arsenal in a re-arranged game on March 14.
O'Neill said: 'Generally, I wouldn't consider loan moves away from Villa. The only reason I would is if something happened now, players going out for a month would only miss the Fulham game.'