West Ham United announced the permanent signing of Crysencio Summerville from Leeds United on Saturday afternoon in a deal that is expected to exceed £30m with add-ons. Summerville, 22, attracted attention from a number of Premier League clubs this summer after winning the Championship’s Player of the Season award last season, scoring 21 goals and creating another 10. The Netherlands U21 ace is reportedly set to cost West Ham an initial £25m fee, but that Leeds could rake in a further £9m in add-ons. Performance-related add-ons could see Leeds rake in another £5m on top. The other £4m is expec…