Moore has until tomorrow to decide if he wants to keep hold of Geohaghon, who has kept the experienced Nick Fenton out of the side.
It's thought if the Millers decide to keep him, the move is likely to be another month's loan rather than a longer deal until January.
Meanwhile Ryan Taylor played in a friendly at Oldham yesterday after coming on as sub on Tuesday night against Bradford, Marcus Marshall missed the game due to a tweaked hamstring.