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Ronny Deila wants Celtic to shrug off European disappointment and get back on the domestic track against Aberdeen on Sunday.
The Parkhead boss was speaking after the Hoops' 1-0 defeat by Inter Milan in the San Siro on Thursday night which saw the Scottish champions exit the Europa League at the last-32 stage - 4-3 on aggregate.
Deila's team were more than holding their own until Dutch defender Virgil van Dijk was sent off by referee Ivan Kruzliak in the 36th minute after picking up a second yellow card.
It was an uphill task for Celtic thereafter and they never really came close to getting the vital goal before Fredy Guarin fired in a wonderful strike with two minutes remaining to take a rather unconvincing Serie A side into the last-16.
The Hoops will turn their attention to the visit of second-placed Aberdeen on Sunday in a match which will go some way to deciding the destination of the Scottish Premiership title.
They face Dundee United in the William Hill Scottish Cup quarter-final and Scottish League Cup final next month as the quest for the domestic treble continues.
Deila said: "Hopefully we get over it and get ready for Sunday.
"It was a good performance and gives us motivation for domestic football so we can hopefully get back to the Champions League next season.''
The Parkhead club were fined 10,000 euros by UEFA on Wednesday for crowd disturbances against Dinamo Zagreb in Croatia last year and they could be in trouble again after two flares were held up in the section housing around 3,000 Hoops fans.
Deila described it as "disappointing'' and said: ``We have to get rid of this, it is nothing to do with football.
"You can hear the fans still singing now but we have to behave in the right way.''