Due to UEFA
regulations on stadium sponsors, during
European matches the stadium is not
officially referred to as Emirates
Stadium, as Emirates are not an official
sponsor of the Champions League
competition; other stadia, such as the
Allianz Arena in Munich , have fallen foul
of this rule before. UEFA refer to the
stadium as Arsenal Stadium, which was
the official name of the stadium a
Highbury.
link....Wikipedia
update president set president = speaker where president is null