Here are four key battles that could determine the blockbuster Club World Cup semifinal duel between PSG and Real Madrid.

Paris Saint-Germain coach Luis Enrique described Wednesday's Club World Cup semi-final showdown between the European champions and Real Madrid as "special" but dismissed questions over his relationship with Kylian Mbappe ahead of a reunion with the superstar striker.

Real Madrid have a tough fight ahead of them, as their clash with PSG is fast approaching in the Club World Cup. The club faced Borussia Dortmund in the quarterfinals, and while the Spanish side came out on top, there were nervy moments in the closing minutes.