Celtic manager Ronny Deila says he is angry following his side's 0-0 home draw against Dundee this evening.
The visitors contained Celtic for large portions of the Scottish Premiership fixture and even enjoyed several good chances to steal all three points themselves.
Celtic's fans were not happy with what they saw and booed the side off at both half time and full time.
With Aberdeen winning away at Dundee United, Celtic's lead at the top of the Premiership table is now down to only four points and the Bhoys have a fight on their hands to win their fifth top flight title in a row.
Deila knows things are not going well at Celtic and says he is angry and determined to put matters right.
relatedNewsStory
"It’s easy to say my reaction. I’m very disappointed and the whole team is. It wasn’t good enough", he told his post-match press conference.
"We want as big a gap as possible, but we need to get our performances better.
"There have been a few games in a row now where we’ve not been good enough. We need confidence and energy in the team. That’s what we’ll work on.
"I’m angry, everyone is, but we’re in this together. We lose as a team. Today we didn’t lose, but we’re still disappointed", Deila added.
The Celtic manager also said he understands the fans' frustrations, adding: "I understand. The players understand that as well.
"The Celtic fans stay behind their team and they will do it now, but we have to show a better side to us."
