How to watch Athletic Club vs. Real Sociedad online for free

TL;DR: Live stream Athletic Club vs. Real Sociedad in the Copa del Rey for free on RTVE. Access this free streaming platform from anywhere in the world with ExpressVPN.

The Copa del Rey semi finals are absolutely mouthwatering. A lot of fans will be focused on Atlético Madrid vs. Barcelona, but the first semi-final matchup is arguably even better.

Athletic Club take on Real Sociedad in the Basque derby. The San Mamés stadium will host the first leg of this fiery rivalry. We're expecting passionate support...