IMO this season has shown, that in EPL to break down the small teams week in week out, we need to be able to play two strikers from the start. Lukaku is used to playing in 2man strikeforce as is Costa. We could easily start half of the matches against mid-table teams and relegation battlers with a 4-4-2 or 4-1-3-2 like Willian---Matic---Luiz/Oscar---Hazard ------------Costa--Rom------------- or -----------------Matic---------------- -----Willian---Oscar----Hazard ---------Costa------Rom------------ looks potent and solid to me. Neither of Agüero, Dzeko or Negredo scored an extraordinary amount of goals, still because 2 of them played each match, they were keeping each other fresh and still with everyone of them averaging at least 0,5 goals per game it is almost a guarantee of a striker goal every match. Costa-Lukaku would be a strikeforce equal to Suarez-Sturrdige and any other in the league.