Stars like Cavani, Zlatan, Di Maria and Neymar have not come cheap for PSG, who are set to break the billion euro mark with Mbappe's future signing
Ever since the Qatar Investment Authority began to bankroll Paris Saint-Germain, the club has gone from a middle of the road Ligue 1 challenger to one of Europe's elite clubs.
That transformation, of course, has not come cheap, with millions of euros invested by the consortium headed by Nasser Al Khelaifi.
The ultimate prize, however, the Champions League, has so far remained elusive, with PSG's latest challenge under serious threat as the club aim to recover from a two-goal deficit in Tuesday's last-16 decider at home to Real Madrid.
Unai Emery's job might just depend on victory, as the pressure to deliver Europe's biggest crown grows with every year and every blockbuster transfer completed by the French giants and their megarich backers.
Getty2011-12: €95.8 millionThe QIA revolution began in June 2011, when the group completed its acquisition of Paris Saint-Germain from previous owners, Canal + owners Colony Club. The spending spree started almost immediately with the arrival of stars like Javier Pastore, Blaise Matuidi and Kevin Gameiro. Thiago Motta arrived from Inter in January, pushing PSG's total outlay to just shy of €100m.AdvertisementGetty Images2012-13: €110.8 millionAfter finishing second in Ligue 1 to Montpellier in Al Khelaifi's debut season in the boardroom, the president upped the ante for 2012-13. This time PSG smashed the €100m mark on a series of high-profile signings, most prominent of which perhaps was Milan's enigmatic genius Zlatan Ibrahimovic to add goalscoring threat up front. Zlatan was joined by Milan team-mate Thiago Silva, while the raid on Serie A was completed by the arrivals of Ezequiel Lavezzi and Marco Verratti and Gregory van der Wiel also joined from Ajax. The gamble paid off as PSG waltzed to the Ligue 1 title, although in the Champions League Carlo Ancelotti's men came unstuck in the quarters final at the hands of Barcelona.GETTY IMAGES2013-14: €109.4 millionOnce again the Italian top flight proved a happy hunting ground for PSG. More than €94 million was spent on two new acquisitions alone, with Napoli star Edinson Cavani becoming the club's record signing upon arriving in a deal worth €63 million. Defender Marquinhos was snapped up from Roma, while Lille were persuaded to part with 20-year-old Lucas Digne. Part of 2013's spending, however, was offset by the sale of Mamadou Sakho for more than €20m, while Sevilla grabbed the littled-used Kevin Gameiro for a further €8m.Getty2014-15: €49.5 millionIt was a quiet year for PSG on the transfer front, as just one player was signed by Laurent Blanc in the former France legend's second season at Parc des Princes. David Luiz arrived from Chelsea in a transfer just shy of €50m, but the Brazil defender failed to change PSG's fortunes on the biggest stage. While Ligue 1 was retained with ease the club once again came unstuck in the Champions League quarters, ironically against Luiz's former – and future – club who prevailed on away goals after losing the first leg 2-0.