The Nigerian National Petroleum Company Limited and the Dangote Petroleum Refinery are wrapping up discussions on crude oil sales by NNPC to the Dangote refinery in naira and the buy-back of refined petroleum products from the $20bn plant in naira.Parties in the deal may conclude discussions next week, the Vice President of Oil and Gas at Dangote Industries Limited, Devakumar Edwin, declared on Thursday during a space session organised by Nairametrics on X.The Dangote official also revealed that oil marketers had continued to boycott the diesel and aviation fuel produced by the Lekki-based plant, stressing that they had also reported the refinery to President Bola Tinubu that the plant’s low-priced diesel was counter-productive to oil marketers’ businesses.