Hi guys, I received a call from SB after an interview a month ago. HR ask if I'm still keen in the position and for a expected salary range. Told the HR, they said they will work it out, possibly with a salary higher than what I'm expecting and provide me with a final package by the end of next week. Also asked if it was a verbal offer and they said it was.

Should I bank in on this offer? Is is still possible for them to rescind their offer since I had to decline another offer for this (which I already did because the other offer's starting date is in a few days and I really want this position offered by SB)