'Send to Coventry' is an idiom used in England meaning to deliberately ostracise someone. Typically, this is done by not talking to them, avoiding their company, and acting as if they no longer exist.
In other words, it's exactly what Celtic fans would have done to you in May 2023 at the very suggestion of Ange Postecoglou leaving to be replaced by Brendan Rodgers.
Now, though? It's not looking like too bad a trade. The Aussie was literally sent to Coventry after the EFL Cup draw sent Tottenham to the home of the Sky Blues and he was staring into the abyss as they trailed before a late, late show rescued them.
But that hasn't been enough to appease seething Spurs fans whose patience is being tested to the limit. When the Hoops' triumphant Australian manager left after two seasons for a crack at managing one of the biggest teams in the English Premier League, few thought it would be Celtic winning the breakup.