官话可以是, I would like to help, but unfortunately don't have any info that I can help you with, because I have transferred EVERYTHING related to my previous work to xxx. 当然前提是离职前确实做了交接。没有的话只能装死别离他了。

离职的交接分两部分，document transfer 和 knowledge transfer. 前者是离职人的职责，电脑手机纸质记事文件都要上交，但是后者是雇主的职责。挖别人脑子需要有计划有策略早安排，这经理不合格还不要脸，派手下厚脸皮去讨，自讨没趣。