Former Leeds United star Noel Whelan admits he is unsure how sound the defensive side of Jack Clarke's game is.

The Whites saw their winning run ended on Saturday by Hull City and calls for Clarke to be handed the chance to start games by head coach Marcelo Bielsa are growing.

Whelan is a big fan of the young talent and admits there is no doubt about just how exciting he is going forward.

But the former Leeds attacker is unsure how capable Clarke is defensively, a key consideration given Bielsa's demands for his players to track back.

"I've not seen enough of him defensively", Whelan said on BBC Radio Leeds after the loss when asked if it is time for Clarke to start.

"I know what he can do going forward.

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"The way we start games, we need people who are really at it and can track back defensively and do that job, be disciplined.

"I've not seen too much of that side of Jack Clarke.

"I know he goes forward, he's very exciting, he can go past a player with ease and he creates chances and can score himself.

"The only way to find out if he can do that defensive job though I suppose is to start him", the former Leeds star added.

Leeds are next in action away at Nottingham Forest on New Year's Day and all eyes will be on whether Clarke is handed a start by Bielsa at the City Ground.