André Ayew headed a second-half winner as West Ham United gatecrashed Burnley’s party by snatching a 2-1 victory at Turf Moor. Already assured of Premier League survival and their highest finish since 1975 the Clarets were in the mood to celebrate on the final day and Sam Vokes enlivened the atmosphere further by putting them ahead. Related: Peter Crouch heads Stoke to victory over wasteful Southampton Related: Vodafone pulls out of £20m naming-rights deal for