That's correct Baldy!!,
It's the only industry that you get paid less for having more experience

.
Seriously tho,to start building a squad the manager needs to know who's signing and that works both ways and protects the club from being used as a bargaining tool.
All contracts are based on an offer and acceptance,but in football,nothing is guaranteed until the inks dry on the signature .
I know of numerous cases of people saying they are definatley signing only to go elsewhere .
It's a brave stance,but in my opinion the right one