epa05389463 English referee Mark Clattenburg during the UEFA EURO 2016 round of 16 match between Switzerland and Poland at Stade Geoffroy Guichard in Saint-Etienne, France, 25 June 2016. (RESTRICTIONS APPLY: For editorial news reporting purposes only. Not used for commercial or marketing purposes without prior written approval of UEFA. Images must appear as still images and must not emulate match action video footage. Photographs published in online publications (whether via the Internet or otherwise) shall have an interval of at least 20 seconds between the posting.) EPA/ROBERT GHEMENT EDITORIAL USE ONLY