The England international has suffered yet another knee injury and is out for six months.
The England international has been in top form for the club recently and is a key part of the West Brom squad.
However, he was replaced by Boaz Myhill in the game against Stoke City and he was originally ruled out for a month, as reported by The Guardian.
However that is not the case. Instead he will miss the next six months as the knee damage he suffered has been confirmed as more severe than originally thought.
The club confirmed on their official website earlier today that he not only damaged knee cartilage, but also knee ligament damage and he is out until October.
He underwent an exploratory operation yesterday which discovered the problem and West Brom will have to make do without him from now on.
The problem is nothing new, which will certainly worry the stopper considering his age. He suffered cruciate knee ligament damage back in 2007 whilst with Manchester United and missed almost a year of action.
Foster and West Brom fans will hope he makes a swift but full recovery from his latest setback.