Fran Kirby has been ruled out for the foreseeable future as she is suffering with fatigue.
The forward hasn't played for his club or country since February.
Before Sunday's FA Cup semi-finals, Emma Hayes was asked for an update on Kirby.
There is no chance of her playing at the weekend. She has been taking some time in the background and has been suffering with a lot of fatigue.
We don't know why, but we are trying to find the right solutions for Fran, so we can get to the bottom of it.
Fran won't be available for selection until we get to the bottom of it.
Kirby was out of football for more than nine months after being diagnosed with a heart condition at the end of 2019.
Kirby wrote on the social networking site that he was sad that he had to write another message like this.
With this being an on-going issue throughout my career, it was time to put my health first. I want to thank everyone who has taken the time to message, I am doing everything I can to come back again.
I will be the biggest fan of the Lionesses until then.