Arsenal have linked up with US Olympic sprinter Michael Johnson in order to improve their players' physical performance.
The Gunners were visited by Johnson at their London Colney training base as they prepare for their Champions League tie against Olympiakos at the Emirates on Wednesday night.
The four-time Olympic gold medallist runs a running performance school in Texas, which various Arsenal players have attended in order to improve their running technique, and Arsene Wenger believes his players can benefit from the 45-year-old's expertise.