This will be the second season on loan in the Premier League for the 21-year-old, who made 32 appearances and scored two goals for West Brom last term.

He has previously spent time at Charlton Athletic and Swansea City in the Championship, amassing 77 senior games in total over the past two years.

The midfielder joins an evolving Palace side now managed by former Arsenal captain Patrick Vieira, as well as reuniting with Chelsea Academy team-mate and fellow England Under-17 World Cup winner Marc Guehi, who made a permanent switch to the Eagles earlier this month.

He will be hoping to break through the Chelsea first-team when his loan is completed.