Former Celtic striker Colin Kazim-Richards has opened up on his time at Parkhead, calling then-manager Ronny Deila the "worst" coach he has ever worked with.

The forward, who has played for 19 clubs in his career, joined the Hoops in January 2016 but only spent six months in Glasgow.

He played 13 games in total, scoring just two goals, and does not look back fondly on his time in Glasgow.

Speaking to the Filthy Fellas podcast, he said: "You asked who's the worst coach, he's [Deila] the worst coach. We won the league that year but got beat in the cup final as well.

"Celtic, massive team. Out of respect I am giving you answers as we can sit here and joke and tell you he's this and that.

"But from my perspective, it was more like, I like to learn and once you stop learning at whatever situation you're in, you become stale.

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"It's because you aren't learning. I think with Ronny Deila, there was nothing he was doing that any of us was learning.

"There was no motivation, no communication, no relatedness and on the pitch one thing he was not good at was tactics.

"It was like 'what are we doing?' He brought this full fat diet into the team. No carbs, but there was bacon, pork sausages, everything fat and meat diet.

"If I am lying, I am sure you can look it up somewhere. You would come down to breakfast at nine in the morning and it's all fried food, just meat, you're like 'what's going on?

"It was a difficult situation and I don't think he was having a good time there as well."

That campaign also saw Mark Warburton's newly promoted Rangers defeat the Hoops in the Scottish Cup semi-final and the 37-year-old hinted at a confrontation between himself and Deila.

"They beat us and they were the league below us, knocked us out the cup," he added. "But I didn't even get on so if you class that as playing... cause me and him... that's the altercation we got in after that."