Arsenal and Holland legend Robin Van Persie believes ex-Celtic star Virgil Van Dijk "has it all" and can be the best defender in the world.

The former Manchester Utd star watched Van Dijk stroll another game - yesterday's Community Shield clash against Man City - and believes his countryman is a superstar.

Chatting to ex-teammate Rio Ferdinand as part of BT Sport's coverage of the game, Van Persie listed the defender's skills and talents.

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Though he wondered if Van Dijk could become even BETTER - should he start attacking the ball as he defends.

Van Persie said: "Van Dijk is a top, top player, he proves himself.

"He went from a small team, Celtic, to Southampton, now Liverpool for the last couple of years, captain of Holland. 

"He has it all in my opinion.

"But do you think that he can gain that extra 10 per cent if he starts to defend forward, towards the ball?"

Ferdinand - who once listed Celtic Park as his favourite European ground to play in - agreed with the striker's assessment.

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And he believes Van Dijk could separate himself entirely from any other defender in the world if he can add one aspect to his game.

He added: "On the ball I think he can come out more. He’s so good on the ball, so comfortable, he’s got the range of 30-40 yards.

"If he brings even more of that out in his game he goes even more past the other defenders.

"I think he’s the best now but I think he would then separate himself completely, adding them little things."