Collins confirms Kozak interest and claims Bitton is worth over £10m
Assistant manager confirms Ronny Deila went to watch Aston Villa forward in action.
John Collins has admitted Celtic are keeping tabs on Aston Villa striker Libor Kozak and claims midfielder Nir Bitton is worth over £10m.
Celtic boss Ronny Deila took a trip to watch Czech Republic striker Kozak in action as Aston Villa's U21s beat Derby 2-1 and after failing to land the striker this summer, the attacker remains on the Scottish champions' radar.
Collins said: "Ronny went down and had a look at the game and of course he [Kozak] scored a couple of goals but there's nothing imminent.
"We're looking to strengthen all over to be honest."
Meanwhile Collins has reiterated Nir Bitton's importance to the Scottish Premiership champions, insisting he values the player at more than £10m.
Celtic issued a statement earlier this week including a quote from Bitton's agent Dudu Dahan, stating the Israel international would not be leaving the club this summer.
And Collins believes the 24-year-old will continue to improve in Glasgow, adding: "Nir signed a long, five year contract.
"He's been a terrific player for us, he's had a fantastic 12 months and hopefully he's going to have many more for Celtic. He's a terrific young boy to work with and I know he's enjoying playing with Celtic.
"He's [worth] £10m plus, he's a very good football player and he's only going to get better.
"He's a very level headed young man, very focused and he knows his job is to train every day and play for Celtic."