From yesterday match, what I'm really realized, is that I thought Costa not a 'deadlock breaker' striker. He is more like 'needs to be served' striker. What I mean is that he is struggled to solely create chances to score, he is no Messi or Ronaldo. But if you give him the ball on the right time, he surely would finish it without problem. He is more like a clinical finisher. If we want to see him perform, he needs other players to perform as well. That's why we always see Fabregas or Hazard shone when Costa scored. But it is exactly what we needs, so I don't see any problem with it.