Cristiano Ronaldo and Pierre Emerick-Aubameyang were shown the door, while Alejandro Garnacho has flourished since being reprimanded - what's happened when Mikel Arteta and Erik ten Hag have had to get tough at Arsenal and Manchester United?

Arsenal versus Manchester United. For years the pre-eminent Premier League fixture to look out for every season.

Then came the doldrums. Arsenal haven't been crowned English champions since 2004, while United are approaching a decade this summer.

There have been plenty of false dawns since their barren spells but both sides are on the up with plenty considering Sunday's fixture a pivotal one in the title race, despite it only being the middle of January.

Mikel Arteta (left) will face Erik ten Hag on Sunday as Arsenal welcome Manchester United

Premier League leaders Arsenal sit eight points clears of fourth-placed United - with both the in-form sides at present.