More than 7,000 people have donated to the page to help fund a private search for Mr Ibbotson's body.
Flowers, shirts, scarves and hats have been placed at the feet of the statue to one of the club's greatest players, FA Cup final-winning skipper Fred Keenor, ever since Sala and pilot David Ibbotson went missing three weeks ago.
An extensive rescue and recovery operation followed the incident.
The UK's Air Accidents Investigation Branch (AAIB) confirmed on Wednesday that a body had been passed to the Dorset Coroner, having been recovered with the help of specialist contractors, and it was identified as Sala a day later.
The player's body was first spotted by British rescuers using a remotely operated underwater vehicle on Sunday close to where the plane vanished from radar on 21 January.
The Piper Malibu N264DB was en route from France to Cardiff, after the Argentine striker made a quick trip back to his former club Nantes two days after his 15 million pounds transfer to Cardiff was announced, the BBC reported.
"We again are sending our serious sincerest sympathies to his family, to Cardiff City to Nantes and to all his fans".
Following Saturday's crucial 2-1 victory at Southampton they are without a fixture until they host Watford on February 22, and Warnock had been preparing to take his squad to Tenerife ahead of the run-in that will determine whether they succeed in preserving their Premier League status.
A fundraising appeal has been set up by the family of Mr Ibbotson, who was flying the Cardiff City striker Emiliano Sala from Nantes to the United Kingdom when their plane crashed in the English Channel near Guernsey on January 21.
A statement from the club said the behaviour would not be tolerated and that the two fans would likely be banned as a result.
Southampton said they would work with Hampshire police to identify individuals who made indecent gestures towards Cardiff supporters.
A woman looks at the tributes at Cardiff City Stadium for Emiliano Sala.
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