 Complete the following phrase:  The fortunes of Paris Saint-Germain changed dramatically when Qatar Sports Investments QSI purchased the club in 2011. Since then, Paris have spent heavily on the signings of world-class players such as Zlatan Ibrahimović, Thiago Silva, Edinson Cavani, Ángel Di María and, most notably, Neymar and Kylian Mbappé, the worlds two most expensive transfers in football history. As a result, PSG have dominated French football, winning 27 trophies: seven league titles, six French Cups, six French League Cups and eight French Super Cups. They have also become a regular in the knockout stages of the Champions League, reaching the final for the first time ever in 