The manager, who had seen his side concede five second-half goals to crash out of the competition, admitted that he may dip into the transfer market but will also spend the coming days working on a few issues at the training ground.
When asked about the possibility of signing defenders during the January Transfer Window, the manager said he would consider a move but also called upon the current crop to make better decisions as many of the issues are self-inflicted.
Speaking via the Express & Star, Dean said; "That is a possibility and something we are looking at to take the club forward. But we have got a full week on the training ground now. There will be bits that have to be worked on this week.
"We have to make better decisions. At half-time I didn’t see that performance coming. We had spoken about starting bright. But they have a corner, we don’t get into out slots quick enough and it just becomes too easy.
"We got shell-shocked again. It’s something that needs to be addressed. We spoke about it through the week. We were outstanding in the first-half. But we need to re-group into our shape a lot quicker. We didn’t. Looking back at the goals there are one or two players who need to do more.
"I am speaking about the same things every week. You are vulnerable after you concede. But you have to find your way back into the game. We can’t make decisions like we are at the moment. We have to be compact and we have to be organised. We can’t have players just switching off."