Swansea manager Michael Laudrup says the injury suffered by Michu in a 0-0 draw with Reading should not prove serious.
Spanish forward Michu limped off in the stalemate at the Madejski Stadium on Wednesday and it was initially feared he could be facing a lengthy spell on the sidelines.
However, Laudrup has since indicated the initial prognosis is positive on a player who has been one of the revelations of the 2012/13 season so far.
"His ankle is twice as big now. We don't know how bad it is," Laudrup said.
"The doctors and the physios say it shouldn't be the ligaments, which is the most important thing.
"The next question is 'will he play on Saturday?' I don't know. We will have to wait 24 hours.
"Hopefully it is not too bad. It is not a muscle injury but still we have to be careful. He has to be 100 percent.
"He is one of the top scorers in the league, definitely our top scorer. He has played nearly every match this season.
"Even if he is the most important player, we have to deal with it (if he is out). If you rely so much on one or two players it is not good for any team."
Reading manager Brian McDermott was relieved to pick up a point, ending a grim run of seven defeats in succession.
"We need to find a way to get results and today we got a result," McDermott said.
"We are disappointed they didn't give us the handball goal because they normally give them here. Adam would have headed it but he said he got pulled back.
"We were much more resilient, it is important to move on with a point and we can look forward with confidence to West Ham.
"We have got a point and a clean sheet and we are off the bottom of the table."