Newcastle Jets key midfielder Leonardo Santiago will have to prove his fitness in the A-League side's final training run if he wants to take on Adelaide on Sunday.
The former Bundesliga player hasn't trained this week after being laid out by Central Coast defender Jake McGing in last week's draw that ended in Santiago being taken off on a stretcher.
However coach Scott Miller said there was a chance his Brazilian pivot could make the trip to Hindmarsh Stadium.
"It's just an extra precaution for him to be sitting upstairs," Miller said on Friday.
"Obviously the heat could affect him in a sense, but that extra day off his legs as well.
"He's aware of the tactics involved in the game. He was involved in the meeting this morning, but we just felt give him an extra day off."
While Santiago, who has previously played with 1860 Munich and Ajax, won't be definitely ruled out until kickoff, Miller said he would prefer his players train with the team on game-eve.
"Essentially you leave it until (kickoff), but that's not a given," he said.
"The day before a game is my minimum expectation for the player. They need that at least to prove not only to me, but their teammates."
Santiago isn't the only player to enjoy a light week, with Miller easing his side's training schedule in the heat this week in order to ensure fresh legs in Adelaide.
"This it hottest I've experienced and a few people are struggling to be honest with you," he said.
"We haven't trained long this week. The duration hasn't been long. The intensity's been high, but the duration's been short."
The clash marks the first time skipper Nigel Boogaard and midfielder Cameron Watson line up against their old club, although Miller said any inside knowledge would be obsolete.
"Our scout reports come from their first few rounds and understanding how they play and their systems," he said.
"Nigel and Cameron were good information for us in a sense, but the manager may well change it."