Dennis Oli will be assessed in the coming days after sustaining a knee injury in Tuesday’s friendly with Brentford at Adams Park.
Gary Waddock said: “The forward was replaced at half-time and now faces a race against time to be fit for Saturday’s Capital One Cup clash at Watford. He took a whack and he's very sore so we'll let the swelling go down and assess him in the next 24 to 48 hours.”