I am partly from Zaragoza (English/Spanish parents), funny enough. There used to be a great pub to watch just off Independencia but it shut a few years ago and I haven’t been back during the season since.
You’re fortunate that we’re the late kickoff and Real Zaragoza play even later, as it means you can probably get it on.
I would try either Bull McCabe’s on Calle Cadiz (also just off Independencia) or Gallaghers on Calle Murallas Romanas — you may need to ask to have a screen changed, but they should be happy enough to oblige. May have a fair few Spurs fans in, though.