Forster has scored five goals so far this season

Veteran Brighton striker Nicky Forster has been ruled out of action for between four and six weeks after undergoing an operation on his knee.

Albion are hoping to sign a replacement for the 35-year-old, who twisted his knee during a training session.

Manager Micky Adams told BBC Southern Counties Radio: "He's had cruciate ligament damage in the past but the surgeon has repaired a cartilage."

"There's significant bleeding in there," he added.

Forster missed the 5-4 penalty shoot-out win over Leyton Orient on Tuesday, following the 2-2 draw over 90 minutes in the Johnstone's Paint Trophy.