Midfielder Youssouf Mulumbu has committed his future to West Bromwich Albion after penning a new three-year contract.
The 23-year-old DR Congo international made 46 appearances and scored three goals in his debut season at the Hawthorns last term which ended in promotion back to the Premier League.
"Graham Dorrans signed a new contract three days ago and I'm delighted that another of our talented young players has committed his long-term future to the club," manager Roberto Di Matteo told the club's official website.
"Youssouf was one of about five players who played in the majority of our games last season and he played a major role in our success.
"The great thing about Youssouf is that he's a very humble guy who wants to learn.
"He's also going to get better and better because he is still young."