Normal service was resumed as Celtic beat Rangers 1-0 in Sunday's Old Firm.Steven Gerrard was handed his first taste of defeat with his new club as Olivier Ntcham scored the only goal of the game in the 62nd minute.It was not without its controversy, with Allan McGregor lucky to stay on the pitch following an off-the-ball kick on Kristoffer Ajer and then going on to make numerous crucial saves.Yet, it was Gerrard who was most aggrieved with the officials as the ex-England midfielder claimed there had been a foul in the build-up to Ntcham's goal."It's definitely a foul. I've been around the game a very, very long time and that's a foul in my book," Gerrard told Sky Sports."It's actually a foul in the fourth official's book as well because he's shouting down the mic, 'Foul, foul, foul'."Brendan Rodgers, as you'd expect, refuted those claims and the former Liverpool boss remains unbeaten against Rangers.His side's dominant display was all the more impressive in light of the unwanted distractions they have had to deal with this week, namely the fallout from Moussa Dembele's move to Lyon.

Dembele has weighed in 

The striker joined the Ligue 1 outfit for £19.7million and in one of his last training sessions in Glasgow, he reportedly clashed with Rodgers.

It's not so much Dembele's departure that has caused a stir - that was inevitable at some point in the promising 22-year-old's career. No, it's the way he went about it.

For many Hoops fans, it came as a surprise then to see him tweeting his delight after the victory.

And it didn't go down too well:

"I was determined to come to Lyon," Dembele said at his unveiling, per the BBC.

"Those in charge gave in. It was hard. I gave everything and in the end, it paid off.

"It was a certainty that I wanted to come to OL."

It's a pity that after two hugely successful years in Scotland, he may not be fondly remembered by his old fans anymore.

Do you begrudge Dembele over his Celtic exit? Have your say in the comments.