Chelsea will have to pay Manchester United a £5m fee if they decide not to sign Jadon Sancho on a permanent basis this summer.
The 24-year-old joined Chelsea on a season-long loan in August in a deal that included an obligation to buy for between £20m and £25m, providing the London club finish at least 14th in the Premier League this season.
Chelsea are fourth, with nine games of the season remaining.
However, as initially reported in the Athletic,, external it has now been confirmed by sources with knowledge of the deal that a clause exists that would allow Chelsea to send Sancho back to Old Trafford providing they pay United £5m in compensation.