MOSCOW (Reuters) – Swiss commodities firm Glencore may be selling its stake in Russian oil group Russneft to its former owner and founder Mikhail Gutseriyev, the Kommersant daily reported on Wednesday, citing sources. Glencore’s sale, years in the works and due to be finalised in the first half of 2022 pending regulatory approvals, capped two decades of investments which saw it trading millions of barrels of Russneft’s oil even as it witnessed some of Russia’s top corporate and political battles. Glencore did not disclose the buyer or the value of the transaction, but Kommersant cited sources …