Brazil superstar implicated in corruption case concerning his transfer from Santos to Barcelona.
While Real cruised to victory in the Madrid derby, Barcelona failed to score for the first time in 637 days.
Barcelona president confident that Messi will remain at Camp Nou for the rest of his career.
Guardiola's assistant reported to have clashed with Messi after Tuesday's Champions League encounter
Victory over Barcelona will inspire future generations, believes Man City coach Pep Guardiola.
City strive for perfection but even Guardiola concedes that may not be enough.
Manchester City manager defends his goalkeeper after red card.
Guardiola returns to the club where he made his name as Manchester City travel to Barcelona.
Luis Enrique says Lionel Messi is the best player of all time and, on the evidence of his three-goal display against Celtic, it would be hard to disagree.
Sid Lowe on the new Liga season and Spain's desire to challenge the commercial dominance of the Premier League.