The possible foul by Koke on Luis Suarez for Griezmann's goal

The possible foul by Koke on Luis Suarez for Griezmann's goal

Atletico Madrid coach Diego Simeone works on set plays like few others.

One of their most utilised moves is the ball to the far side of the area for Diego Godin to head it back across the box. The Uruguayan defender is a beast at fulfilling his role. This team, in addition, he also had the help of his team-mate Koke. 

As the ball was lofted into the area from a free-kick, the Atletico midfielder wrapped his arms around Luis Suarez, trying to stop him from tracking Godin.

In the replay it can be clearly seen how Koke manages to stop the Barça man doing his job. It's also clear that the referee can't see what is going on. Not because he can't, but because he's looking in a different direction. 

Whether it's a foul or not, the play was allowed to go on and ended up with Griezmann's goal. It was a moment which upset Barça's players.