Gonzalo Higuain (AC Milan)

Higuain's transfer to Milan happened mostly as a consequence of Ronaldo's surprise arrival at Juventus. Rather than having to fight for a starting position for the Italian champions, Higuain opted to move to their Milanese rivals.
Higuain's stats in Serie A are impressive. The Argentine has netted 111 goals in his five seasons in Italy. His record stands to be improved. Milan are hopeful of a return to their former glories and will depend upon Higuain's extensive experience at top level.
Cristiano Ronaldo can certainly make a big impact in the Serie A. But affirming himself as the league's top forward will not be an easy mission. These are just of the five best players that could threaten Ronaldo's status and win the top goalscoring award come the end of the season.