However, United revisited the idea with adidas, who won the war to become the club's latest manufacturer, and the German firm took a different approach.
As a result a number of XXXXL jerseys have been ordered and will be available at the Old Trafford megastore in either August or September.
United will then monitor sales and should demand prove sufficient, the shirts will become a permanent fixture.
Officials have also vowed to undertake a fan survey which will include questions on jersey sizes - and even bigger tops may be on the way.
Most Premier League shirts, including Chelsea, Manchester City, Liverpool and Arsenal are available up to XXXL.
However, Newcastle and Spurs have beaten United to the paunchy punch.
The White Hart Lane club are also offering their new jerseys for 2015-16 in XXXXXL, with the St James's Park outfit matching United's XXXXL, although given the business savvy of Toon owner and sportswear tycoon Mike Ashley that does not come as a surprise.
Fans of England, however, can only buy national team jerseys up to a miserly XXL.