Kyle Walker believes the sky is the limit for team-mate Raheem Sterling at Manchester City under the guidance of manager Pep Guardiola.
Chelsea defender Ethan Ampadu joins Bundesliga side RB Leipzig on a season-long loan.
Chelsea face Barcelona in a friendly on Tuesday - so can you name these 13 players who played for both clubs?
Emma Saunders is joined by former Liverpool player Stephen Warnock, former Newcastle, West Ham and Bolton captain Kevin Nolan and Ben Haines from 90 minute football.
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