On deadline day, is it sufficient to have a deal done subject to medical? Given the problems we have experienced, I am a little concerned that we will sign a bunch of players and then the club will announce, so and so is injured/needs operation etc.
There must be allowances for protracted scenarios such as work permits etc but you're right maybe we need to adopt the following equation to make sure:
Number of players to sign = N +1 where N equals the number of players you think you need to sign.