The rest of Mitsubishi maintain a 30% interest in MMC, Nissan has a 34% interest in MMC (effectively a controlling stake), Renault has a 43.4% interest in Nissan and Nissan as a 15% non-voting interest in Renault. Nissan will have 4 board members in MMC, including the chairman.
Easy!
And no, there will be no return to Rally. Ghosn don't race. MMC will supply small cheap cars through Asia and crossovers everywhere else, increasingly on Renault/Nissan platforms for the crossovers (and Lancer?) and maintain their Kei and small/cheap platform elsewhere. Is my guess anyway.
Life's too short to drive bad cars.