High-flying Liverpool host Guardiola’s side this weekend after City lost five in a row and drew with Feyenoord.
The Reds have gained their first success over their European nemesis since 2009.
Real have won the competition a record 15 times, twice beating Liverpool in the final.
The Egypt international is out of contract in the summer.
The musician headlined at the festival in 2002.
Sir Rod previously played at Glastonbury in 2002.
The Reds travel to Southampton on Sunday before hosting Real Madrid in the Champions League and Manchester City in the Premier League.
Zoe Ball has announced her departure from the BBC Radio 2 Breakfast Show after six years.
The Reds moved five points clear at the top of the Premier League with victory over Aston Villa.
A Luis Diaz hat-trick helped his side to a 4-0 victory over Bayer Leverkusen.
The Egyptian is out of contract at the end of the season and has sparked speculation about his future with recent social media posts.
Gomez replaced Ibrahima Konate at half-time at Anfield after the France defender came off the pitch nursing his left arm following an awkward fall.
The Reds went top of the Premier League with a 2-1 win over Brighton.
Captain Van Dijk, 33, has said he is in conversations with the club.
Vorderman said she would not be continuing with her Sunday radio show last month.
