Jamieson had been walking around on crutches after rolling his ankle during a training session while Alemao has a leg injury also thanks to a clash during the week.

But the club said today he will start in tonight's Hyundai A-League Preliminary Final against the Queensland Roar at Hindmarsh Stadium.

 Jamieson was given the all clear by the club's medical staff after he completed a fitness test this morning and will be a certain starter for the do or die encounter.

 The 20 year-old limped off the training track after rolling his ankle on Thursday raising doubts on whether would be able to take his place tonight.

Jamieson's inclusion for tonight's clash against an in from Queensland Roar is a boost for United, the left back having been a key part of The Reds' defence this season and one of the club's most consistent players.

Aurelio Vidmar had said yesterday : "We've got concerns with Scott Jamieson and also Alemao, he's got a pretty nasty cork which he received at training on Wednesday and he hasn't been able to do anything this week.

"He only ran at about 60 per cent this morning so once again he'll be having a little test tomorrow so there's a couple of players, and Angelo is one of them, who will be on standby."

One play definitely ruled out is midfielder Diego. Vidmar said the Brazilian, who has been released by the club for next season, wasn't fit enough to take part in a cut-throat contest like the preliminary final.

He said: "We had a good chat a couple of times this week and he's just out of condition basically. He's been out along time after that quad injury - he trained with us all last week and then this week he started to feel just a little bit tight through the hamstrings so he won't be right."

The Reds coach has tried to stay upbeat despite these setbacks.

"When it rains it pours doesn't it? We've had a lot of those situations throughout the course of the year, a lot them, and the players that have actually come in have always stepped up. We've got full confidence in the squad that we have to go out there and perform and perform well," he said.

But he admitted it wasn't ideal - especially when other players were out of the game for other reasons.

"If Cassio looks back at the red card he got (against Melbourne), he'd realise it was extremely silly and things like that happen with Scotty's ankle and then he starts kicking himself.

"I did make a joke of it yesterday. I brought him (Cassio) into the changeroom and told him that the FFA had just rang me and had rescinded your red card ...and he believed me for a minute," he said.