Celtic defender Gustaf Lagerbielke is adamant Rangers' disallowed goal at Ibrox was a foul.

The Swede thought he had handed the hosts the opening goal after Cyriel Dessers came out of a coming together with the 23-year-old with the ball and squared it to Kemar Roofe who finished past Joe Hart.

However, referee Don Robertson was advised to look at the monitor and ruled that the Rangers forward had fouled the Parkhead defender.

The Scottish champions ran out 1-0 winners in the first meeting of the two teams this season thanks to a strike from Kyogo Furuhashi in first-half stoppage time.

And Lagerbielke feels the officials made the correct decision. He told Sky Sports: "I took it [the ball] forward, with too many touches maybe, but I got fouled by Dessers and they scored but fortunately for us, it was a foul and I thought so too. I could breathe after that.

"I thought it should never count. I am happy it was not a goal. It was a great atmosphere. It was tough to come here.

"We stuck together as a team and played well. In the second half we showed a lot of team spirit even though there is a lot of new guys we stuck together.

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"We had to keep our heads calm. There were a lot of emotions and we had to zoom out and focus on what we had to do."

It was Lagerbielke's third game as a Celtic player and his central defensive partner Liam Scales was keen to praise his counterpart at the back as well as the overall team performance.

"We have had a couple of poor results in a row and to come here and win like we did was good," he said.

"It is a massive win. It is just one game as it is the start of the season. We now have the international break and it was good to finish a run of frustrating fixtures with a win.

"We felt in the first half we dominated the ball and played very well. We had to defend when they had their spells.

"They are a good side and you are not going to come here and dominate the whole game so we had to dig in and show a lot of character.

"We have been put together the last two games and that is two clean sheets in a row so we cannot complain.

"We are still getting to know each other's games and there are improvements to be made but I think we have done well after being thrown together.

"Gus [Lagerbielke] is just the door and it takes time to get to know how each other play. We are happy to play together."