Celtic boss Ronny Deila watches Aston Villa striker Libor Kozak

Image source, Getty Images

Image caption, Kozak has not played a Premier League match for Villa this season

Celtic manager Ronny Deila watched Aston Villa striker Libor Kozak score twice in an under-21 match on Monday.

Assistant manager John Collins revealed Deila had travelled to Villa Park to see the Czech Republic international, 26, face Derby's Under-21 team.

"Ronny's gone down to have a look at him and he's scored a couple of goals but there's nothing imminent," said Collins.

"We're looking to strengthen all over, to be honest."

Villa paid Lazio about 拢7m for Kozak in September 2013, with the 6ft 3in centre forward signing a four-year deal.

He broke his leg during a training session at the beginning of January 2014 and was out for 19 months.

This season, Kozak has featured just once for Villa - coming on as a second-half substitute in a League Cup win over Notts County.