Sam Allardyce has targeted 25 players in the January transfer window in an effort to help revitalise his injury-hit West Ham squad.
Allardyce is currently without eight first-team players, including David Bentley and Gary O'Neil, while Jack Collison and Joey O'Brien are also suspended.
"There are about 25 names on my pad already at the minute," Allardyce told BBC London 94.9.
"It is important to sift through the information we have and try to make the right choices as quickly as we can.
"We have very few players available to be selected. I have to fit a system around what's available, rather than dropping players into a system that is good for us.
"Hopefully we will deliver a player into the squad as quickly as possible in January."
West Ham welcome Barnsley to Upton Park this weekend.
