Callum McNaughton will continue his excellent experience at AFC Wimbledon having played in their Paint Trophy quarter-final against Swindon on Tuesday.
The Hammers youngster made his 12th appearance for the Dons when drew 1-1 before losing on penalties to Paolo Di Canio's side at the County Ground but it will not be his last, despite rumours of a possible recall.
McNaughton has extended his stay at the south London side until 10 December but he will not be eligible for their FA Cup match with Scunthorpe United this weekend.
Meanwhile, Frank Nouble will also not play for Gillingham in their FA Cup tie away to Bournemouth on Saturday, and is due to head back to the Boleyn after the League Two match at Aldershot Town on 19 November.
Dominic Vose has returned to the club after his month with non-league Braintree Town, while Cristian Montano is also back from his stay at Swindon Town.