By Andrew Gastelum The French star is reportedly upset at unkept promises made by the club after he signed a new contract over the summer. Kylian Mbappé is reportedly prepared to leave Paris Saint-Germain in January with the forward unhappy with the club’s current direction, according to multiple reports in Europe. French outlets RMC and Le Parisien first reported the unsourced news, while ESPN’s Julien Laurens confirmed that Mbappé’s relationship with the club has broken down. The 23-year-old star was the subject of a lengthy transfer saga for much of the last year before snubbing a move to R…