The former Celtic striker has taken to social media once again.
Didn't know Sutty was in Glasgow tonight ! https://t.co/fnPqfeeFkx— John Hartson (@JohnHartson10) March 3, 2016
John Hartson has joked that former Celtic striker Chris Sutton was behind the big 'Deila out' banner that was unfurled outside their ground on Thursday afternoon.
Hartson took to Twitter earlier on Thursday to address those who questioned his claims about Deila earlier this season.
It's clear the former Celtic striker never felt he is good enough, while Sutton has also gone on record many times criticising the Norwegian.
One argument from those defending the Bhoys boss is that he could have done much better had several of the ex-pros backed him instead of willing him to fail.
But the number of those defending Deila seems to be waning. Celtic keep dropping points at a rate that has been completely alien at Parkhead - even during Deila's first campaign in Glasgow.
What will come of all the tension at Celtic? Will their current boss last or could he be gone before the end of the season?