Brazil's star footballer Neymar is to fight a claim by his former club Barcelona for $15 million compensation after his record move to Paris Saint-Germain.
The Brazilian left the Nou Camp earlier this month for a world-record $358 million fee, joining PSG in a move that more than doubled the previous highest mark.
The Spanish club said they were pursuing damages of about $15 million from Neymar for what they allege to be a "breach of contract".
Neymar said he will fight Barcalona's move in what is developing into an increasingly bitter war of words after his move to France.
The Brazilian has also promised to battle his old club for part of his 2016 contract renewal premium which he claims has not been paid.
Neymar said Barcelona deserved "much more" than it's current board of directors and added that the situation made him "very sad".
The Catalan club said they were chasing about $15 million in damages and, that if Neymar could not pay, PSG should.
The demand appears to relate to a payment made to Neymar when, in 2016, he renewed his contract with Barcelona through to 2021.
"Barcelona decided to take these actions in defence of their interests, after a unilateral termination of contract urged by Neymar Jr a few months after signing the renewal until the end of the year 2021," a statement read.
PSG said in response the club were "surprised" by Barcelona's statement.
Despite the dramas, Neymar has clearly not fallen out with his former teammates after posting a series of photos on Instagram featuring Gerard Pique, Lionel Messi and Luis Suarez amongst others.