If they transfer Mbappe, the Haaland plan cannot come true this year because it is certain that they will offer a very high contract for Mbappe. Due to Mbappe's contract, they cannot make an astronomical offer to Manchester City and City will not send Haaland. In my opinion, Julian Alvarez could also be a good option for Madrid. Joselu is not very suitable for Madrid.
With Mbappe's transfer alone it is enough that Real Madrid will not bid for players with higher prices including Julian Alvarez who has a price of 90M according to transfermakrt.
Some of the main squad is now more than enough with the addition of Mbappe perhaps he will be in the center forward position while the left and right wings will be filled by Vini and Rodrygo.
Even Joselu is not an expensive player maybe Real Madrid can throw him away at any time, it's just that now Joselu is still a little needed for substitutes sometimes he also has the luck to always score goals.