Chelsea have brought in 18-year-old forward Omari Hutchinson from Arsenal.
Hutchinson began his youth career with the Blues, but was scouted by Charlton in 2012 and later joined Arsenal U12s after a brief break to play futsal.
As a 12-year-old, he received praise from Pele after taking part in a South London tournament organised by the Brazil legend.
Hutchinson will now return to Stamford Bridge after failing to make it past the bench in a year-and-a-half as a professional at the Emirates.
He did impress in the Premier League 2 last season, playing an important role in an Arsenal side that finished third.