While most eyes will be fixed on the Manchester derby at Old Trafford, another clash between two fierce rivals is unfolding between Celtic and Rangers this afternoon.
The pair of Scottish Premiership heavyweights are facing off at Celtic Park with just one point separating them on the league table.
But the current standings count for little in the Old Firm – a feud that stems from a longstanding rivalry between the two most successful clubs in Scottish football.
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While the action on the pitch is certain to be intense, Celtic fans made sure Rangers knew whose home ground they were playing at for this early season meeting.
A video has emerged showing hundreds of Celtic supporters hurling abuse and gesturing at the opposition players as they disembark the away team bus and enter the stadium.
Surely just about any player would be intimidated by such an aggressive reception considering the sheer volume of the noise and number of fans.
It is quite obvious the Rangers players want to escape the hostile area as quickly as possible – but unfortunately for them the boos and jeers are only going to be louder once the match kicks off inside Celtic Park.
The home side for today trail the head-to-head record 111 wins to 132, but they do currently sit atop the Scottish Premiership table having taken maximum points from their opening three matches this season.
Despite occupying second position in the league, Rangers have endured a less convincing start to the campaign with two wins and two draws on the board.
Former Liverpool boss Brendan Rodgers is sure to be relieved he is patrolling the touchline on home soil this time around – but he will get his turn in the reverse fixture at Ibrox Stadium on New Year’s Eve.