Watching Liam Cooper limp off during Leeds United's clash against West Brom on Tuesday was a worrying sight. The Whites captain will miss up to six weeks of football as a result, leaving Marcelo Bielsa with the task of finding the most suited replacement for the side.
Gaetano Berardi replaced Cooper during the 1-0 win at Elland Road, and looks the likely man to fill the voide and partner the impressive Ben White at the back.
Yet, when ahead of the tough trip to Millwall at the weekend, it wasn't just Berardi mentioned when discussing options at centre-back.
"We have Berardi, Davis, Phillips, Pascal [Struijk], Olly Casey", the Argnetine said.
The mention of Olly Casey will certainly turn heads. The youngster doesn't even have a squad number at Leeds and a mention of his name could indicate how close he is to first-team selection in some form over the coming weeks and months at Leeds.

Pascal Struijk has impressed for the under 23's since his move from Ajax in January last year, and Leif Davis has featured for the Whites in the league - he played five minutes of the win at Bristol on the opening day of the campaign.
"We have a lot of players we are working with for a long time", Bielsa added.
"Casey and Struijk are younger. Davis has played with us. Phillips is an option in this sector. Of course, Berardi is the direct substitution."
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