Celtic boss: We'll see a lot more of Rogic
Rogic capped his first Celtic start since 2013 with a goal as the Scottish champions defeated Partick Thistle 2-0.
The 22-year-old took his chance on Sunday, putting in a strong performance that included a freakish goal on 28 minutes.
Celtic’s Norwegian manager praised his side’s attack and saved special mention for the Socceroo who endured a horror injury spell with the Scottish giants.
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“Tom was very good in the first 40 minutes,” Deila told the club's website.
“You can see what kind of talent he is with his touch of the ball, awareness, scanning and understanding so there are a lot of things he can give to the team. I think we’ll see much more of him.
"I told him I hadn’t seen him so much and when I came here I didn’t hear anything about him so I didn’t know who he was because he was injured the whole time.
“He had one year out with injury almost and when we got him starting again I saw he had something special with his touch, understanding and that he is a very good football player.
“I told him he’d never leave this club before getting a real chance and now he shows that he deserves that chance and he’s also a very good professional.
“He wants to develop all the time and he’s not satisfied to sit on the bench so he has a lot to give to us.
“Everybody gets a chance and they have every day to show themselves. I’m after improvement – people that want to get better, learn and have ambitions.
“I felt very sorry for Tom in the first six to eight months I was here because he was walking around injured and couldn’t do anything but he has the mentality to succeed.”
Deila said he wanted to see Celtic’s excellent first-half sustained over the course of a full game.
“It was an important match and the first 35 minutes were maybe the best we’ve done so far this season,” he said.
“We played fantastic football and defensively they only had two passes in the team.
“Then we got a little bit sloppy and a bit tired – some of the players like Tom haven’t played for a long time and he felt it at the end of the first half because we pressed very hard, so there are always things you can improve but we kept a clean sheet.
“I think we’re improving all the time and I love working with the boys here. We always want to get better and the first 35 minutes was good rhythm, timing in what we did and we opened them up a lot.
“If we can continue doing that in longer spells it’s going to be hard to beat us."