Oscar De La Hoya believes Floyd Mayweather is angling for a rematch with Canelo Alvarez -- claiming he's a broke-ass fraud who desperately needs a money fight to stay afloat.
The head of Golden Boy Promotions was celebrating the record-breaking $365-MILLION contract he made for Canelo Alvarez ... when we asked about his rekindled beef with Floyd.
As we previously reported, Floyd dug up an old photo of Oscar on Thursday and blasted him on social media saying some pretty offensive stuff.