The 30-year old goalkeeper has been sidelined with a broken foot since the end of August but now says he is fully fit and ready to go.
However, the former Baggies no.1 knows it will be tough to depose Boaz Myhill who has done a stellar job deputising in goal.
"It has been a long slow recovery but I'm really, really happy to be back," Foster told the club's official website. "That's me fully fit now.
"We'll have to wait and see what happens on Saturday (when Hull City visit). Boaz and Luke [Daniels] have both done very well.
"Bo has been great. I know exactly what Bo can produce and his performances haven't surprised me. He's an international goalkeeper and he's been absolutely brilliant."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball