League One OldhamAthletic and League Two Chester City have both offered Hartson a footballing lifeline following his departure from Championship high-fliers West Brom.
Collin, who had spells on loan at Doncaster Rovers and OldhamAthletic before being moving to Borough Park, recently played his 200th game for the West Cumbrian club.
David Moyes' side looked to have succeeded where their Merseyside rivals Liverpool had failed in the previous round, as they led 2-1 into injury time against OldhamAthletic.
Feeney sustained a back injury on Tuesday during training with his club OldhamAthletic and McAuley was forced off in the second half of his club's game against Derby on Tuesday night.