PICTURE this:
Cristiano Ronaldo, your captain, has just slammed home a sensational free-kick to draw level late against fierce rivals Spain - securing a vital point for Portugal.
CR7 charges to the corner post to celebrate his stunning hat-trick - and even more impressive free kick - and teammates pile on for a massive group hug.
All except for one, centre back Jose Fonte.

It's not because of any split in the ranks at Portugal, but actually an astute tactical decision by Fonte who stayed back in the field of play to prevent a quick kick-off by Russia which would've left Portugal's goal desperately exposed.

During Cristiano’s hat-trick celebrat Portuguese players were celebratin him except one who had to stay in the pitch as FIFA states if all 'outfie players' are off the pitch during celebrations, opposing team can kick-off the game

FIFA rules state that if all outfield players - which excludes the goalkeeper - are off the field during goal celebrations then the opposing team is allowed to restart via a kick-off.
Essentially it boils down to not being able to kick off while an opposing player is in your half of the pitch: but if all players are off the field, none are in your half of the pitch then the kick off can take place.
Portugal's Jose Fonte (separate from group) and his sensible play in Cristiano Ronaldo's hat-trick celebration.

So while Ronaldo and eight of his teammates embraced near the corner flag, Fonte - and goalkeeper Rui Patricio, who is down the other end of the pitch - appear to be the lonliest players on the pitch.

But he may have saved the day.
For clarity, England's Kieron Trippier did something similar after Harry Kane scored against Tunisia - wheeling away to celebrate on his own while his teammates converged on the skipper.

"Prevention is cheaper than cure "

But I don't think Super eagle understand diz rules.

Players understand the rules.
By the way, for the surest sports predictions, check my signature.