Noel Whelan has trolled Leeds United defender Laurens De Bock for dropping down a division to join Sunderland on deadline day.

Speaking exclusively to Football Insider, the ex-United striker and lifelong fan claimed the left-back, 26, will be disappointed to have joined a club in League One.

Sunderland announced yesterday they have signed De Bock on a season-long loan from the Championship high flyers after being frozen out by Marcelo Bielsa.

Whelan believes it is a good deal for all parties.

“Leeds have worked hard to get him off the books for a season,” the pundit told Football Insider. “At Sunderland, he will be able to play regular football and they will pay his wages, which is brilliant for Leeds.

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“The fact he has gone to Sunderland shows where he is right now as a player. He is not getting into the Leeds team ahead of Barry Douglas or Ezgjan Alioski.

“You have to go out a play football regularly, especially at his age. No disrespect, but I’m sure he wanted to join a bigger club than Sunderland.”

De Bock joined Leeds from Club Brugges in January of last year for a fee of around £1.5million and signed a four-and-a-half year contract.

He spent last season on loan at Belgian top-flight club K.V. Oostende and has not been in the Leeds squad this season as he was given permission to find a new club.

In other Leeds United news, Danny Mills has suggested to Football Insider that one Elland Road ace is suffering mentally after seeing him berated by Bielsa.