Complex sentence: After the West Side Stadium proposal was rejected, the Jets entered into a 50/50 partnership with the New York Giants to build a new stadium in East Rutherford to replace Giants Stadium, which opened in 2010 and will host Super Bowl XLVIII in 2014.
Split into simpler sentences: After the West Side Stadium proposal was rejected, the Jets entered into a 50/50 partnership with the New York Giants to build a new stadium in East Rutherford to replace Giants Stadium. The New Meadowlands Stadium opened in 2010 and will host Super Bowl XLVIII in 2014.