The English Premier League season opened last month, but superstars

FC Barcelona and Manchester City compete when they take a friendly contest into 

The Nou Camp, which benefits an organization near both club

The FC Barcelona teams are meeting together at Camp Nou to support 

Juan Carlos Unzue, a former teammate and coach of Pep Guardiola'

In a charity soccer match named A Great Game for a Greater Cause

All teammates have selected a strong division for the team

With the participants expected to compete at the highest level in support of ALS research

While the match is scheduled to be held in the middle of the regular season 

The match shouldn't cause too much difficulty for either team 

As regular-season games for the UEFA Champions League are not scheduled for the next couple weeks