That's not new at all for Real Madrid to see them linked to players like Mbappe and Osimhen however we saw the same story about Real Madrid during the summer and Haaland was linked to the team but they couldn't hire any of these players. I think hiring Mbappe will be a hard option for Real Madrid since PSG will try to keep him in the team and Osimhen has also extended his contract with Napoli and he is also far from Real Madrid.
It is very likely that Real Madrid will target a striker who is not from a well-known team such as PSG or Napoli, both of whom are always associated with Real Madrid. For PSG, they definitely won't want to sell Mbappe to Real Madrid because Mbappe is a player they really need to keep in order to maintain their strength every season. I think there are already several names of attackers who may have been included in their monitoring for the winter transfer market.
The media always links Mbappe with Real Madrid, even in a recent article where Mbappe would consider an offer from Real Madrid if Real Madrid planned to recruit him. Yes, it's always not a result that comes true because Mbappe will be retained by PSG from offers from Europe elite teams in every transfer window.