A sell-on clause involving Niall Huggins could make Leeds United 'millions' in the future, according to Sky Sports pundit Kevin Campbell.

The Lowdown: Huggins moves on

The young right-back traded the Whites for Sunderland in the summer transfer window, joining the League One club on a permanent deal.

It has since been revealed by a Leeds source that they did not earn any immediate cash from the deal but ensured a 'significant' sell-on clause was included, meaning they will receive a large chunk of the fee for any future sale involving Huggins.

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The Latest: Campbell makes exciting claim

Speaking to Football Insider, Campbell believes it is a shrewd move by Victor Orta and Leeds, with Huggins' potential meaning he could make them a lot of money further down the line:

"That clause could make them millions in the future.

"The thing with these youngsters now is that they want to play football week in, week out. If you are not going to be able to offer them first team football then they are going to look for a way out.

"Sunderland are a huge club who have aspirations of getting automatic promotion this season so why would he not want to join?

"Yes, Leeds may make a few quid out the deal but it could quite easily be a deal they end up regretting in the future. He may well continue to progress and all of a sudden they’ll be thinking, ‘We should have kept him.'"

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The Verdict: Good luck to him

It made total sense for Huggins to move on this summer, given his lack of first-team opportunities at Leeds, and the hope is that he flourishes at Sunderland.

Not only would that be a positive for him personally - it's always nice to see young players do well - but also because of the potential future financial impact on the Whites.

Should Huggins end up leaving the Stadium of a Light and move to a bigger club, it could end up being a lucrative piece of business from Orta and co.

In other news, a pundit is concerned about one Leeds United player. Find out who it is here.