#1 Kylian Mbappe

As things stand, Mbappe appears to be the ultimate backstop for Real Madrid's attacking woes. Not only was he excellent for PSG after arriving for €180 million last summer but he also cemented his position in the national team after a peach of a performance against Argentina, where he scored two goals and also won a penalty for his team.
It almost goes without saying that by virtue of such flair, he has already made a place on Florentino Perez's radar. The Real Madrid president has a penchant of landing World Cup standouts as evidenced by the signings of Mesut Ozil and James Rodriguez in 2010 and 2014 respectively and with Mbappe's signing, he could pull off a hat-trick.
On top of that, Real Madrid will find the task a bit easier as the Frenchman is himself a fan of the 13-time Champions League winners.