His injury problems have now increased, with Cuellar and Danny Rose both picking up hamstring problems at Bolton, which makes the addition of reinforcements this month more important.
Martin O'Neill: “We wanted to treat the competition properly on merit. I don’t care that this was our fifth game in 15 days, we wanted to be in the competition and to do well in it.
“We had a couple of illnesses and injuries to players, we don’t have the biggest squad and we were really stretched.
“We’ve obviously lost a couple more now, but we are going to try and do something about it if we can – and we need to.”