Brentford boss Steve Coppell is hoping to sign Southampton teenager Mark Peters in time for the trip to Peterborough.
The 18-year-old has recovered from a broken ankle and is in talks with the club over a possible move.
Peters is a product of the Southampton Academy and was top scorer for the under-17 side two seasons running.
The Bees are looking to win their third game on the bounce and can climb to third in Division Two with a victory at London Road.
Captain Paul Evans pledged his future to the club this week and will start in midfield.