moscow head russian state oil giant rosneft igor sechin moscow wednesday mean appear court testify major corruption trial former minister accord russian news agencies russian prosecutors accuse alexei ulyukayev extort million bribe powerful political rival sechin exchange approve lucrative business deal turn sting operation ulyukayev fire president vladimir putin post economy minister shortly detain deny charge say sechin frame ask reporters whether would moscow wednesday hear due sechin reply would still visit western siberia tuesday attend open new rosneft oil field tomorrow meet governor khanty-mansiiysk region gather staff sum result prime minister visit sechin quote say interfax news agency sechin already miss two hear ulyukayev trial previously say would attend soon schedule allow ulyukayev arrest year ago come moments sechin personally hand cash late-night meet rosneft headquarter exchange sign rosneft purchase stake mid-sized oil producer bashneft accord investigators fate bashneft one lucrative state assets privatize years focus major turf war rival kremlin camp source close deal government say ulyukayev among believe bashneft go private investors sechin deeply embed tangle allegiances rivalries russian politics business ulyukayev belong faction economic liberals argue less state control economy sechin close ally president vladimir putin represent opposite view rosneft spokesman mikhail leontyev dismiss speculation possible reason sechin likely absence wednesday hear also cite demand schedule make problem make one purpose avoid attention essence trial leontyev say first case human russian history court want hear testimony man tight schedule ulyukayev face 15 years jail find guilty rosneft 's sechin miss hear ex-minister corruption trial media