#3 Grzegorz Krychowiak
Signed in a disastrous 2016 summer transfer window for an overpriced and inflated €30 million, Grzegorz Krychowiak represents one of the worst business deals in PSG's history.
Part of an immensely successful Sevilla team and brought in to replace club stalwart and modern-day legend Thiago Motta, Krychowiak lasted a mere two seasons at Paris.
Constant tension with manager Unai Emery and a poor spell of form made Krychowiak an uncomfortable fit in Paris blue. During this time, the Polish holding midfielder was voted "Flop of the Season" by French daily paper Le Figaro.
He was acrimoniously bundled out on loan to England for West Brom where he suffered an ignominous relegation from the top flight. He then went to Lokomotiv Moscow first on loan, then permanently, as Paris Saint-Germain cut their losses.
#2 David Luiz
PSG shattered the world record fee for a defender when they signed David Luiz from Chelsea for a whopping £50M in the summer of 2014. On the back of Brazil's humiliating 7-1 drubbing at the hands of Germany at the 2014 World Cup, many were taken aback by PSG's need to sign the seemingly unreliable and flamboyant defender.
Seen more as a statement signing than a practical one, David Luiz played for just two seasons at the club. Despite having back-to-back domestic treble success and a memorable Champions League win over Chelsea, Luiz is seen as extremely poor business by the club.
This was put into even more perspective when Paris Saint-Germain sold him back to Chelsea at close to half of what they initially paid.
#1 Jese Rodriguez
Jese Rodriguez was seen as a breakout academy talent in a superstar Real Madrid squad. In his two seasons at Real Madrid, he recorded 18 goals and 15 assists in over 94 appearances for Los Blancos as a tricky and pacy wide player.
With two Champions League trophies to his name, Jese looked the part to be one of Spain's brightest talents, publicly appreciated by even Fiorentino Perez as a "gem".
Finding it difficult to break into a competitive Real Madrid team, PSG made a €25 Million bid for what they assumed to be a prodigious talent. Sadly, Jese's version in Paris was an extremely underconfident and distracted player, never truly finding his footing at the club.
He made a mere 18 appearances for PSG, constantly shipped out on loan as an unwanted player to Stoke City, Las Palmas, Real Betis and Sporting CP. He finally had his contract acrimoniously terminated for off-field demons in his personal life that took precedence over his playing ability.