The match against West Ham United is Albionâ€™s first since the dismissal of Di Matteo last weekend.
Dorrans said: "Thatâ€™s football and the lads have got to get on with it. Weâ€™ve got to do everything in our power to keep this club in the Premier League and hopefully we can get a good win on Saturday to start it off.
"Our main aim is to keep this club in the Premier League no matter whoâ€™s in charge. It has been a tough time but everyone is sticking together."