He told City's website: "We don't have any further injury problems from the weekend.
"The good news is that Isaksson is doing more or less everything in training but he will not be available for tomorrow. I think after the two international games he will be ready."
A fit-again Isaksson, who ended last season as City's number one, will be keen to return to the Blues line-up, but according to his Manager he faces a fight for the jersey with Schmeichel and England Under 21, Joe Hart.
"It gives me a good problem, Eriksson noted. "If I had all three available for Sunday I can't see any reason why I should change at this moment.
"Kasper has done everything absolutely perfect so far, so it's up to the other two to show that they are better."
When asked if he's told young Schmeichel the jersey is his for the foreseeable future, Sven replied: "No, I haven't said that.
"You can't say that to a 20-year-old goalkeeper, but if he carries on like this, why should I change now? The season is very long and a lot of things will happen."