With 75,635 seats to fill, only Wembley Stadium (90,000) can better Old Trafford’s capacity in England – their closest domestic rival is Arsenal’s Emirates Stadium (60,260).
Following redevelopment a decade ago, the capacity rose to 76,212 seats, but a reorganisation of seating in 2009 reduced this to its current total.
With the South Stand the only side of the ground still single-tier, but restricted by the train line behind, it looks like Old Trafford will remain the same size for years to come.
Additionally, new regulations mean the club will have to increase disabled section, losing approximately 3,000 seats in the process, which means the current Premier League attendance record is likely to stand for some time, too.
View the slideshow above to check out United’s 10 best ever attendances in the Premier League era.