GERMANY

The most important court decision of 2012 will take place Wednesday in Germany, when the red-robed justices of the German Constitutional Court hand down a decision for which it is no hyperbole to say it could change the course of history. The Court is expected to rule over whether Germany is barred from contributing to the European Stability Mechanism, Europe's all-purpose bailout fund of which the German state is the major planned benefactor.

Asian stock markets declined Tuesday as investors opted for caution ahead of key events including German court ruling on ESM constitutionality and the U.S. Federal Reserve policy meeting later this week.

Most U.S. employers are unwilling to add workers because of uncertainty around November's elections, the Federal budget, and the effect of Europe's slowdown, according to a quarterly hiring survey by ManpowerGroup. The pace of hiring is expected to slow in large emerging economies including China and India.

A look at five players likely to be on Chelsea's radar heading into the next transfer window.