Barcelona Luis F Rojo gives his take

The most surprising image of the first half from Barcelona's draw at Olympiacos was a fan who spontaneously approached Lionel Messi to give him a hug.

More surprising was the fact that no member of security seemed to be in a hurry to stop him.

On the alarming side was that the supporter left happily and peacefully after sharing an embrace with the Barcelona man, appearing to return to his place in the stands.

To make matters worse, another fan attempted to do the same thing in the second half, perhaps encouraged by the poor security, and even took a selfie with Leo!

UEFA can't allow these things. It is complicated to control thousands of spectators and not have any sneak through or misbehave.

It happens in many games and is difficult but what cannot be permitted in any way is the passive attitude of the stadium's security members.

What happened on Tuesday should result in the immediate closure of the stadium.

The two people who made their way onto the field seemed like good guys, hugging and even kissing Leo.

The problem is that maybe one day, an intruder may not have such good intentions and then it will cause a serious problem for the fat cats.

UEFA must be relentless and crack down in these cases. The safety of the players comes first.