Bamako will on Tuesday sign a deal with Tuareg rebels occupying a key northern city that is expected to pave the way for nationwide polls next month, a Mali government envoy told AFP. \"The accord is ready to be signed. I am able to tell you the interim accord will be initialled this morning and signed this afternoon,\" said Tiebile Drame, head of the Malian delegation to peace talks in Burkina Faso, where the deal will be inked.