If Mbappe's transfer to Real Madrid takes place, a football player who will play successfully for many years as Real Madrid Benzema will be brought to the team. I believe Mbappe will outperform Benzema. What he's done for PSG is obvious and he's a perfect player statistically.
I think it will be difficult for other players to match the achievement statistics that have been done by Benzema at Real Madrid because he has recorded many quite interesting achievements during his 14 years with Real Madrid. Even though Mbappe is one of the players who is often linked with Real Madrid in the transfer market, I think Real Madrid will think long about signing him because last season Real Madrid was confused by Mbappe after he rejected an offer made by Real Madrid.
Especially in his recent statement where Mbappe has clarified his future where he will stay with PSG. I think Real Madrid can choose Harry Kane to replace the void on the front lines. Moreover, Harry Kane's character will be very suitable to be an aggressive player in scoring goals.