Teams usually change the design of their shirts every season.The shirts often have the names of business organizations on them. These companies pay for their name to appear on the shirts.They consider this a good way to tell people about their product!In February 2008, the Manchester United players plan to wear yet another new shirt.However, this shirt will be very different from the others.The players will only wear it for one football game. And the shirt will not have any company names on it.It will not even be the usual team colour of red.In fact, it will look just like a shirt from the 1950's ― the kind worn by the old Manchester United team.But what is so special about these shirts?Well, the shirt has an important meaning. It is a symbol of the team's memory of a tragic historical event...