In one of the standout games of the Premier League season, Manchester City host Arsenal.
It is widely being suggested that the winner of this game will go on to lift the trophy next month.
Mikel Arteta's Arsenal currently have a six point lead over Pep Guardiola's men but that could be cut to just three points with a win this Sunday.
Crucially, City also have a game in hand to play at a later date so if they were to win that too then they would be level.
The Gunners come into this game on the back of a 2-1 home defeat to Bournemouth, whereas City beat Chelsea convincingly last weekend.
However, before that, Arsenal had won their previous four league games.
Guardiola's side are unbeaten in their last nine league games.
When the sides met back in September, it finished 1-1, after Erling Haaland put City ahead before Gabriel Martinelli scored a stoppage time equaliser for the Londoners.
The EFL Cup Final and this game
The sides also met last month in the EFL Cup final, with City lifting the trophy after a 2-0 win. Nico O'Reilly scored both goals.
Arsenal arguably came into the cup final as favourites and many believed that gaining the first silverware of the season would have benefitted them during the run-in towards the end of the Premier League.
Since watching City win that title, Arsenal have lost to Bournemouth in their next league game, they were knocked out of the FA Cup by Championship side Southampton and limped over the line in their UEFA Champions League tie with Sporting Lisbon.
Whilst Arsenal remain ahead, City will be starting this game as favourites in the eyes of many.
They will be looking to make home advantage count and increase the pressure on their rivals.
It is a different day and a very different situation but there may also be a hope that the EFL Cup win can give them extra confidence and possibly a psychological advantage over their opponents.
Earlier in the season there was talk of the Gunners winning a potential quadruple but, following their success last month at Wembley and an upcoming semi final in the FA Cup, City could be chasing down a domestic treble.
Now or never?
There still remain seven games of the season for City so there is time for the situation to change significantly again.
They have been chasing Arsenal for a while and there have been weeks where both contenders have dropped points. However, City have managed to get themselves back in close contention and this week represents a great opportunity.
It is similar to a cup final in the sense that the winner can gain a real advantage in the title race, mathematically and mentally. At this stage of the season it could be crucial.
However, there are still games to play and everything will not be decided this Sunday. The trophy will not be awarded to the winner at full time.
Whilst the importance of the match should not be underestimated and there is an opportunity, it is just another game of football.
History repeating itself?
Back in 2023, City and Arsenal were again both competing for the title.
As with this season, Arsenal had led for a long time and looked favourites to lift the trophy.
The two sides met at the Etihad Stadium in early April and it was again set up as a potential title decider.
The Gunners arrived in poor form and lost 4-1 to City. The result meant that City closed the gap to the leaders to just two points and the following weekend, they went top.
Ultimately, City won the Premier League, despite Arsenal leading the way virtually all season. Guardiola's men also won the UEFA Champions League and the FA Cup following that title.
Some may draw similarities between that season and this one.
The one factor that is certain is that the outcome on Sunday could play a key role in this year's title race and the eyes of many people will all be on the game.