LONDON – Lawrence Okoye was well aware why he was in front of the cameras Wednesday as the San Francisco 49ers started their practice week here in preparation for their game Sunday against Jacksonville at Wembley Stadium.Okoye is from London and was a member of the 2012 British Olympic teams as a discus thrower. He is trying to transition to football, but his journey has been delayed by a preseason knee injury. The ultra-athletic Okoye is on the injured reserve and will not be eligible to practice until next summer.