Cardiff City F.C.
Swansea City have condemned the image and said they will support police with investigations.
The Air Accidents Investigation Branch is trying to establish what happened to the aircraft.
Cardiff City's Neil Warnock and Ken Choo joined locals at the footballer's funeral
The footballer died in a plane crash after he had just signed for Cardiff City in a record transfer deal.
The Cardiff City striker was onboard a small plane which vanished on 21 January.
High-profile football stars, including Diego Maradona and Mesut Ozil, have paid tribute to the striker.
The Bluebirds received a letter from the French club on Tuesday.
The privately funded search is being carried out behalf of the footballer’s family.