Guidetti was forced to come off in the 59th minute of Celtic’s 4-1 win over St Mirren.
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Deila admits the injury could just be a slight knock, however he said the full picture will not be known until after the striker has a scan. He said: “Hopefully he’s going to be OK. The medical people checked him and said they think it’s just a kick, but you never know with these things. We will need to see from the pictures of the scan. I don’t know if it’s a twist or just the impact of a hard tackle.”
The Celtic manager also revealed that James Forrest, who scored Celtic’s second, came off as result of a migraine.
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