UEFA's Club Financial Control Body (CFCB) will review its decision to clear French champion Paris St Germain of breaking Financial Fair Play (FFP) rules after last year's transfer spending spree, European soccer's ruling body said on Tuesday.

PSG, which signed Brazil striker Neymar for 222 million euros($258.7 million), also sealed an initial loan move for France forward Kylian Mbappe from AS Monaco in a deal media reports said would be worth 180 million euros when it buys him.

The club was cleared of breaking FFP rules last month following a UEFA investigation.

“In light of the decision of the CFCB chief investigator to close the investigation into PSG, the chairman of the CFCB has decided to send this decision for review by the adjudicatory chamber,” UEFA said in a statement.

“This announcement does not pre-judge in any way the result of the review to be conducted by the adjudicatory chamber of the CFCB,” it added.

FFP rules ban clubs from spending more than their generated revenue, a policy introduced to prevent rich owners from trying to buy success and distorting the transfer market.

Teams can be thrown out of European competition for breach of rules but UEFA has in the past negotiated settlements with offending clubs.