Celtic supporters produced their feelings clear on Wednesday, booing the team off as the champions drew 0-0 with Dundee.
Ronny Deila understood the Celtic fans’ adverse reaction to his side’s 0-0 draw with Dundee as Aberdeen closed the gap in the best on the Scottish Premiership to four points.
The champions failed to break down their stubborn opponents on Wednesday, prompting the Celtic Park faithful to boo their side off at the final whistle.
“I’m angry, everyone is but we’re in this collectively. We lose as a team. We didn’t lose but we’re nonetheless disappointed,” Deila mentioned.
“I recognize [the booing]. The players realize that at the same time.
“The Celtic fans remain behind their team and they’ll do it now but we’ve to show a superior side to us.
“We have to evaluate, move on and show ourselves from a distinctive side on Sunday [in the Scottish Cup quarter-finals against Morton].”
The draw allowed second-placed Aberdeen to acquire ground having a 1-0 win at Dundee United thanks to Simon Church’s first-half objective.
Elsewhere, objectives within the opening quarter of an hour from Callum Booth and Steven Lawless helped Partick Thistle to a 2-1 win at St Johnstone.