I will tell a similar story as this. It happened only recently. In his case a job offer was made to a candi in a good company. He was apparently satisfied. He meanwhile got a raise from his present company and found himself more eligible to demand more. At the end he is yet to decide and is still with his old company. Certain skill set in IT are more demanding and the fruits of hard labour should be reaped now but with a limit of discipline. There is no harm in informing otherwise you lose sleep, throwaway old SIMs ........