Aston Villa will be without striker Libor Kozak for the rest of the season after he broke his leg in training.

The Czech Republic international is Villa's joint top goal scorer this season with four goals in 14 appearances.

The 24-year-old suffered the injury after a training ground challenge with Ireland's Ciaran Clark.

Villa boss Paul Lambert said Clark was blameless, describing the collision as "innocuous", a "nothing challenge" and simply a "clash of boots"

Kozak was signed from Italian side Lazio last summer for €8 million.