Barcelona coach Quique Setien admits his system may not suit Antoine Griezmann.
Griezmann has yet to live up to the expectations created after his move to Barcelona but Setien defended the forward.
"He is a footballer who moves a lot," Setien continued, "but it is not easy to filter the ball when you have 10 players so close, covering spaces for the pass.
"Everything is also a consequence of having spent three months without playing, this affects the rhythm.
"When it's your turn to play against a disciplined opponent, like Sevilla, and it's difficult to find the spaces.
"It is almost impossible to surprise these opponents.
"For some players these situations are very frustrating.
"Perhaps we lack a point of effectiveness and coordination."
Setien admitted that he hopes he will stay at Barcelona for next season.
"I always think about it," Setien added.
"When I arrive at a club I think I am going to stay for life, although I know it won't be like that."