Sheffield United striker Darius Henderson is spending two hours every day in an oxygen tent in a bid to be fit for the Championship play-off final.
The Blades tackle Burnley at Wembley on Monday with Henderson eager to overcome the Achilles injury which kept him out of the second leg of their semi-final victory over Preston.
The former Gillingham ad Watford forward has previous experience of securing promotion to the Premier League having found the net for the Hornets as they defeated Leeds 3-0 at the Millennium Stadium in 2006.
And manager Kevin Blackwell will give his eight-goal striker every opportunity to prove he is ready to tackle the Clarets.
Blackwell said: "We are working as hard as we can and trying everything we know to get Darius fit for the game. That includes sticking him in an oxygen chamber for an hour's session twice a day.
"It is a medical fact that the more oxygen you can get into the body then the quicker the recovery time is from injury.
"We are keeping our fingers crossed with Darius and we shall leave a decision on him right up to the last minute.
"From here on in it is all down to how we accelerate the recovery process - and Mother Nature."
But Blades boss Blackwell will not select Henderson unless he is certain the forward will last the distance and has every faith in the Bramall Lane squad as he plots a course to the top-flight.
He added: "He will have to be 100 per cent fit if he is going to play. There is no way I shall be taking any risks with a player's fitness for a match as big and important as this one.
"The real bonus from my point of view, though, is that I have a squad in who I have absolute faith and confidence.
"They possess the ability to adapt if Darius is ruled out. We have the luxury of being flexible enough to change our personnel or system without weakening the team."