Solved

remove driver from auction

Without testing this with a driver , can i remove a driver from auction once i have placed him there?
so if i change my mind can i get him back ?

Nope once auction timer starts it won't stop until it's finished, unless someone buys the driver or unless no one buys the driver then you still have the driver available. But if some one does bid or buys the driver then you lose him. 

If you change your mind, provided nobody has made a bid and you haven't trained the driver to above your manager level you can buy them back but it's going to cost you 9 tokens.