Ronny Deila has told the Daily Mail that his biggest frustration at Celtic so far has been his failure to guide the team into the Champions League group stage.
The Bhoys have fallen at the qualification stage for the past two seasons, and subsequently dropped into the Europa League, but Deila insists that progress has been made.
Celtic were dumped out of Champions League qualifying by Maribor in the 2014/15 season, and this time around Malmo were their conquerors.
Deila saw improvements in their performances in the Champions League though, and the Norwegian is determined to keep his side going in the right direction next term.
"Not taking that step into the Champions League is my biggest frustration," he said. "We were so close this year and that was the disappointing thing."
"But if you see the whole view, we had a better qualification campaign than we had in the year before. And we have to build so we can be better next year."
It is hard to take too much confidence that Celtic will improve in Europe next season, after their disastrous Europa League campaign this term.
Deila’s men failed to win a single match in the group stage of that competition and they finished bottom of their group.
Thankfully for Deila, his side have been much better in domestic matters – and they look near certainties to claim the Scottish Premiership title, meaning they will be back in the Champions League qualification rounds in 2016 to try again.
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