Now, with the body in the wreckage not recovered or identified, his former club is demanding the £15 million transfer fee from Cardiff.
However, it is not clear whether the body discovered is Sala's or Ibbotson's.
Since the incident occurred, Cardiff withheld the first scheduled payment until all of the facts were clarified.
Sala was on board the Piper Malibu that tragically crashed into the English Channel after the striker joined the English Premier League team in a $19 million (£15million) deal.
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Camp Nou was silenced once again in the 31st minute, however, when Roberto conceded a penalty for bundling into the back of Wass. Atletico Madrid face Real Betis on Sunday, bidding to close the gap with leaders Barcelona to three points.
It is thought Nantes will begin legal action if they do not receive a payment within 10 days. BBC have attempted to speak to Nantes for a comment.
Cardiff is looking into details about who owned the plane and who insured it as investigators work through weather difficulties to recover the body that's been seen inside the wreckage, and they intend to meet their transfer obligations to Nantes, according to the Mirror report.
The Air Accident Investigation Branch says the body was recovered in "challenging conditions" with the "operation was carried out in as dignified a way as possible and the families were kept informed of progress".
But upon returning to Wales, he went missing flying across the English channel.
Regional newspaper Ouest-France quoted an anonymous source at Nantes calling Cardiff's attitude "hypocritical", accusing them of "wanting to buy time".