Barcelona are to sue former player Neymar over his 222m euro (£200m) world record move to Paris St-Germain, reports BBC Sport.
The Brazil international made the move to the French club after they met his buyout clause earlier this summer.
A Barcelona statement said the club was seeking repayment of his 8.5m euros (£7.8m) bonus for the renewal of his contract – on the grounds of breach of contract – plus 10% in interest.