Yeah I wasn't clear Brian. Bringing in a player who is currently playing first team football or unhappy at not playing first team football is likely to lead to that player being unhappy. This could rub off on others. Alternatively, dropping Sorenson to the bench, unless the keeper is clearly better, also is likely to cause problems.
I am not saying don't bring another keeper in simply that if we do, it would have to be someone like Mart Poom.