Rangers legend Barry Ferguson was left flabbergasted over the weekend at some of Celtic's recent decision making as the former midfielder expressed his shock at new man Giorgos Giakoumakis' condition.
Ange Postecoglou's Hoops struggled away to Livingston once again as they slumped to a 1-0 defeat.
In the match their woes up top were made clear with Kyogo Furuhashi and Giakoumakis both out for the time being.
And so Ferguson had two big takeaways as he remained dumbfounded that Leigh Griffiths was playing in a Dundee jersey against city rivals United three hours earlier, instead of leading the Celtic line.
Speaking to the Go Radio Football Show, he said: "I watched the Dundee Derby, he (Griffiths) had a great header just by the post, then he had another chance where the keeper makes a good save.
"Naturally he tires as the game goes on because he's hardly played a game of football.
"Was I surprised that Celtic let him go? I don't think he was going to get a chance there.
"Leigh Griffiths has got to think about himself and that's by playing games of football.
"But Celtic are thin up top. Did they expect Kyogo to get injured on international duty? No, they didn't. But that's the gamble you take.
"You sign a striker who's not fit, the Greek guy. He's not fit.
"You're at Celtic here - you need players!"
Another talking point from the Tayside fixture piqued Ferguson's interest – but it came from the Tannadice stands.
And that was the sight of technical director Gordon Strachan watching the Dee while Celtic, the club he has undertaken a three-month consultancy project with, were getting set to play in West Lothian that same afternoon
He added: "It's strange, it pans around to the stand and Gordon Strachan is there with his Dundee tie on.
"He's employed by Dundee, he's employed by Celtic for the next three months.
"I do find it strange. Things like that in football – I don't understand it."