Real Madrid lost 4-2 to Atletico Madrid yesterday, with Diego Costa's brace firing Diego Simeone's side to the prize.
That defeat has now sparked fears that Julen Lopetegui's side will struggle this season, particularly with no Cristiano Ronaldo to call upon.
Real Madrid looked toothless without Ronaldo in their ranks last night with Gareth Bale, his in-house replacement, failing to make an impact.
And the BBC claim that Los Blancos could yet bid for Hazard, Neymar or Mbappe with the European transfer window open until August 31 - although they admit a signing is unlikely.
Real Madrid transfer news: Chelsea star Eden Hazard wants a Bernabeu move (Image: GETTY)
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PSG would likely dig their heels in over both Neymar and Mbappe.
But the Brazil international is keen to one day make the move to Real, despite his past ties to Catalan giants Barcelona.
Florentino Perez has a good relationship with Neymar's father and that could prove key to any potential transfer.
Mbappe, though, is keen to stay at PSG - particularly after being given the No 7 shirt. Ronaldo was his idol growing up and he is keen to emulate his hero, but over at the Parc des Princes.
Neymar: PSG could be a stop-gap before Real Madrid says pundit
Real Madrid transfer news: Los Blancos still need a Cristiano Ronaldo replacement (Image: GETTY)
BBC Sport add Valencia's Rodrigo and Inter Milan's Mauro Icardi are also interesting the La Liga side.
Yet who Real go for remains to be seen.
Speaking yesterday, after the Super Cup defeat, Lopetegui opened up on transfers by saying: “What was outlined by the club's sports policy does not change by this final.
“Now La Liga starts, which is a very important title for me, and we have to start well.”