The Baggies’ left-back has a hamstring injury and will also have to sit out of their trip to Huddersfield Town on Sunday.
This season, Townsend, 31, has made 36 appearances in all competitions and has contributed three assists.
In the most recent update on his health, Corberan stated on March 5 on the club’s official website: “Unfortunately, Conor Townsend will not be with us.
“He had a minor hamstring strain and felt a little tight during the last game. He will miss the next two games due to injury.
There are still three players on our roster that can play left back. Pipa is the last, followed by Erik Pieters, Adam Reach, and others.