BP sets Thursday morning deadline for Rosneft and oligarchs to bid for TNK-BP stake Meanwhile, BP has already told Mr Putin that if it sells its stake - regardless of to whom - it will reinvest some of the proceeds in buying part of the Russian government's shareholding in Rosneft. BP investors hope such a deal would open up opportunities for joint exploration with Rosneft in the Russian Arctic, similar to a partnership deal that was thwarted by AAR last year. Separately, TNK-BP said it was investigating allegations of corruption, levelled against some of its senior management by a former employee. Igor Lazurenko, TNK-BP's former head of logistics, has claimed to possess documents containing "the details of wrongdoing" between TNK-BP and officers at pipeline company Transneft and officials at Russia's Ministry of Energy. The Chancellor of the High Court in London on Tuesday denied a TNK-BP request to extend an injunction it secured against Mr Lazurenko to limit disclosure of the documents. Mr Justice Morritt did not rule on Mr Lazurenko's allegations. TNK-BP said Mr Lazurenko resigned from the company in April after allegations of fraud were made against him. The company has separate proceedings against Mr Lazurenko to recover allegedly "corrupt receipts." TNK-BP said it had begun an independent review of the corruption allegations made by Mr Lazurenko, but that its lawyers had "seen no evidence of wrongdoing by TNK-BP in the documents."