'Legend' O'Neill has brought 'new energy' to Celticpublished at 16:23 GMT
Jane Lewis
BBC Sport Scotland Senior Reporter in Denmark
Image source, SNSMidtjylland boss Mike Tullberg made seven appearances for Hearts in 2008-09
Midtjylland head coach Mike Tullberg believes interim manager Martin O'Neill has "brought a new energy" to Celtic before the sides go head to head in the Europa League.
The Danes sit top of the 36-team table after opening with three wins while Celtic are 21st following a draw with Red Star Belgrade, defeat to Braga and victory over Sturm Graz.
Since replacing Brendan Rodgers, O'Neill has won his two games so far, including Sunday's 3-1 League Cup semi-final success against Rangers, and Tullberg says the Scottish champions are "looking more lively".
He added: "I think the biggest difference is the energy and the power. Sometimes it is like this when you change the gaffer, if you're struggling a little bit, then it sometimes releases some energy, and I think we saw that with two wins.
"So I'm pretty sure it's going to be a tough match for us tomorrow evening.
"They [Celtic] took in a legend, not only in the club, but in the country as well, so we're aware of that. Of course it's a manager who has seen a lot, and done a lot, with a lot of experience.
"So they will come over here to try to get a better position in the Europe League, but we are thinking about our team and not speaking so much about our opponent."
As a player Tullberg spent a short spell on loan at Hearts in the 2008-2009 season, and admits he's enjoying watching his old side set the pace in the Scottish title race.
"As an old Hearts player, you're always following the teams where you played yourself," the 39-year-old said.
"I didn't play for such a long time because I was injured, but I had a great time at Hearts. I still have some friends over there and of course I'm happy about the situation."























